Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN: 9780321964038
Author: GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher: Pearson Addison Wesley,
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Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 …
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experime…
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Chapter 2.1, Problem 38E

Growth of Bacteria Salmonella bacteria, found on almost all chicken and eggs, grow rapidly in a nice warm place. If just a few hundred bacteria are left on the cutting board when a chicken is cut up, and they get into the potato salad, the population begins compounding. Suppose the number present in the potato salad after t hours is given by

f t = 500 · 2 3 t

  1. If the potato salad is left out on the table, how many bacteria are present 1 hour late?
  2. How many were present initially?
  3. How often do the bacteria double?
  4. How quickly will the number of bacteria increase to 32 , 000 ?

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Chapter 2 Solutions

Calculus For The Life Sciences

Ch. 2.1 - YOUR TURN Solve 25x2=125x+3Ch. 2.1 - Prob. 2YTCh. 2.1 - YOUR TURN Find the amount after 4 years if 800 is...Ch. 2.1 - A ream of 20-lb paper contains 500 sheets and is...Ch. 2.1 - A ream of 20-lb paper contains 500 sheets and is...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...
Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - For Exercises 3-11, match the correct graph A-F to...Ch. 2.1 - In Exercises3-11, there were more formulas for...Ch. 2.1 - Prob. 13ECh. 2.1 - Prob. 14ECh. 2.1 - Prob. 15ECh. 2.1 - Solve each equation. ex=1e5Ch. 2.1 - Prob. 17ECh. 2.1 - Prob. 18ECh. 2.1 - Solve each equation. 16x+3=642x-5Ch. 2.1 - Prob. 20ECh. 2.1 - Prob. 21ECh. 2.1 - Prob. 22ECh. 2.1 - Prob. 23ECh. 2.1 - Prob. 24ECh. 2.1 - Prob. 25ECh. 2.1 - Prob. 26ECh. 2.1 - Prob. 27ECh. 2.1 - Prob. 28ECh. 2.1 - Prob. 29ECh. 2.1 - Prob. 30ECh. 2.1 - Prob. 31ECh. 2.1 - Prob. 32ECh. 2.1 - Prob. 33ECh. 2.1 - Prob. 34ECh. 2.1 - Prob. 35ECh. 2.1 - A friend claims that as x becomes large, the...Ch. 2.1 - Prob. 37ECh. 2.1 - Growth of Bacteria Salmonella bacteria, found on...Ch. 2.1 - Prob. 39ECh. 2.1 - Physician Demand The demand for physicians is...Ch. 2.1 - Prob. 41ECh. 2.1 - Bacteria in Sausage The number of Enterococcus...Ch. 2.1 - Prob. 43ECh. 2.1 - Prob. 44ECh. 2.1 - Cortisone Concentration A mathematical model for...Ch. 2.1 - Prob. 46ECh. 2.1 - Prob. 47ECh. 2.1 - Prob. 48ECh. 2.1 - Prob. 50ECh. 2.1 - Interest Find the interest earned on 10,000...Ch. 2.1 - Prob. 52ECh. 2.1 - Interest Ron Hampton needs to choose between two...Ch. 2.1 - Prob. 54ECh. 2.1 - Prob. 55ECh. 2.1 - Prob. 56ECh. 2.1 - Interest Leigh Jacks plans to invest 500 into a...Ch. 2.1 - Prob. 58ECh. 2.1 - Prob. 59ECh. 2.1 - Interest On January 1, 2000, Jack deposited 1000...Ch. 2.2 - YOUR TURN Write the equation in logarithmic...Ch. 2.2 - Prob. 2YTCh. 2.2 - YOUR TURN Write the expression logax2/y3 as a sum,...Ch. 2.2 - Prob. 4YTCh. 2.2 - YOUR TURN Solve for x: log2x+log2x+2=3Ch. 2.2 - YOUR TURN 6 Solve for x: 2x+1=3xCh. 2.2 - Prob. 7YTCh. 2.2 - Write each exponential equation in logarithmic...Ch. 2.2 - Prob. 2ECh. 2.2 - Write each exponential equation in logarithmic...Ch. 2.2 - Prob. 4ECh. 2.2 - Prob. 5ECh. 2.2 - Prob. 6ECh. 2.2 - Prob. 7ECh. 2.2 - Prob. 8ECh. 2.2 - Prob. 9ECh. 2.2 - Prob. 10ECh. 2.2 - Prob. 11ECh. 2.2 - Prob. 12ECh. 2.2 - Prob. 13ECh. 2.2 - Evaluate each logarithm without using a...Ch. 2.2 - Prob. 15ECh. 2.2 - Prob. 16ECh. 2.2 - Prob. 17ECh. 2.2 - Prob. 18ECh. 2.2 - Prob. 19ECh. 2.2 - Prob. 20ECh. 2.2 - Prob. 21ECh. 2.2 - Prob. 22ECh. 2.2 - Prob. 23ECh. 2.2 - Prob. 24ECh. 2.2 - Prob. 25ECh. 2.2 - Prob. 26ECh. 2.2 - Prob. 27ECh. 2.2 - Prob. 28ECh. 2.2 - Prob. 29ECh. 2.2 - Prob. 30ECh. 2.2 - Prob. 31ECh. 2.2 - Prob. 32ECh. 2.2 - Prob. 33ECh. 2.2 - Suppose logb2=a and logb3=c. Use the properties of...Ch. 2.2 - Prob. 35ECh. 2.2 - Prob. 36ECh. 2.2 - Prob. 37ECh. 2.2 - Prob. 38ECh. 2.2 - Prob. 39ECh. 2.2 - Prob. 40ECh. 2.2 - Prob. 41ECh. 2.2 - Prob. 42ECh. 2.2 - Prob. 43ECh. 2.2 - Prob. 44ECh. 2.2 - Prob. 45ECh. 2.2 - Prob. 46ECh. 2.2 - Prob. 47ECh. 2.2 - Prob. 48ECh. 2.2 - Prob. 49ECh. 2.2 - Prob. 50ECh. 2.2 - Prob. 51ECh. 2.2 - Prob. 52ECh. 2.2 - Prob. 53ECh. 2.2 - Prob. 54ECh. 2.2 - Prob. 55ECh. 2.2 - Prob. 56ECh. 2.2 - Prob. 57ECh. 2.2 - Prob. 58ECh. 2.2 - Prob. 59ECh. 2.2 - Prob. 60ECh. 2.2 - Prob. 61ECh. 2.2 - Prob. 62ECh. 2.2 - Solve each question in Exercises 41-64. Round...Ch. 2.2 - Solve each question in Exercises 41-64. Round...Ch. 2.2 - Write each expression using base e rather than...Ch. 2.2 - Prob. 66ECh. 2.2 - Prob. 67ECh. 2.2 - Approximate each expression in the form ax without...Ch. 2.2 - Prob. 69ECh. 2.2 - Prob. 70ECh. 2.2 - Prob. 71ECh. 2.2 - Prob. 72ECh. 2.2 - Prob. 73ECh. 2.2 - Prob. 74ECh. 2.2 - Prob. 75ECh. 2.2 - Prob. 76ECh. 2.2 - Minority Population The U.S. Census Bureau has...Ch. 2.2 - Bald Eagle Population The U.S. Fish & Wildlife...Ch. 2.2 - Population Growth Two species of squirrels inhabit...Ch. 2.2 - Population Growth In July 1994, the population of...Ch. 2.2 - Prob. 81ECh. 2.2 - Prob. 82ECh. 2.2 - Find the value of the index of diversity for...Ch. 2.2 - Prob. 84ECh. 2.2 - Prob. 85ECh. 2.2 - Prob. 86ECh. 2.2 - Drug Concentration When a pharmaceutical drug is...Ch. 2.2 - Tumor Growth An article on growth rates of cancer...Ch. 2.2 - Prob. 89ECh. 2.2 - Prob. 90ECh. 2.2 - Torontos Jewish Population The table gives the...Ch. 2.2 - OTHER APPLICATIONS Music Theory A music theorist...Ch. 2.2 - OTHER APPLICATIONS Evolution of languages The...Ch. 2.2 - Prob. 94ECh. 2.2 - Prob. 95ECh. 2.2 - Earthquake Intensity The magnitude of an...Ch. 2.2 - Acidity of a solution A common measure for the...Ch. 2.3 - YOUR TURN Find the growth function if 5 g grows...Ch. 2.3 - Prob. 2YTCh. 2.3 - In the exponential growth or decay function...Ch. 2.3 - Prob. 2ECh. 2.3 - Prob. 3ECh. 2.3 - Prob. 4ECh. 2.3 - Prob. 5ECh. 2.3 - Prob. 6ECh. 2.3 - Giardia When a person swallows giardia cysts,...Ch. 2.3 - Growth of Bacteria A culture contains 25,000...Ch. 2.3 - Decrease in Bacteria When an antibiotic is...Ch. 2.3 - Growth of Bacteria The growth of bacteria in food...Ch. 2.3 - Prob. 11ECh. 2.3 - Chromosomal Abnormality The graph below shows how...Ch. 2.3 - Botany A group of Tasmanian botanists have claimed...Ch. 2.3 - Decay of Radioactivity A large cloud of...Ch. 2.3 - Prob. 15ECh. 2.3 - Prob. 16ECh. 2.3 - Carbon Dating Refer to Example 2. A sample from a...Ch. 2.3 - Half Life Find the half-life of each radioactive...Ch. 2.3 - Half Life Find the half life of each radioactive...Ch. 2.3 - Half-Life The half-life of plutonium-241 is...Ch. 2.3 - Half-Life The half-life of radium-226 is...Ch. 2.3 - Radioactive Decay 500 g of iodine-131 is decaying...Ch. 2.3 - Radioactive Decay 25 g of polonium-210 is decaying...Ch. 2.3 - Nuclear Energy Nuclear energy derived from...Ch. 2.3 - Chemical Dissolution The amount of chemical that...Ch. 2.3 - Newtons Law of Cooling Newtons law of cooling says...Ch. 2.3 - Newtons Law of Cooling Newtons law of cooling says...Ch. 2.3 - Newtons Law of Cooling Newtons law of cooling says...Ch. 2.4 - YOUR TURN a Convert 210 to radians. b Convert 3/4...Ch. 2.4 - Prob. 2YTCh. 2.4 - Prob. 3YTCh. 2.4 - Prob. 4YTCh. 2.4 - Prob. 5YTCh. 2.4 - Prob. 1ECh. 2.4 - Prob. 2ECh. 2.4 - Convert the following degree measures to radians....Ch. 2.4 - Prob. 4ECh. 2.4 - Prob. 5ECh. 2.4 - Prob. 6ECh. 2.4 - Prob. 7ECh. 2.4 - Prob. 8ECh. 2.4 - Prob. 9ECh. 2.4 - Prob. 10ECh. 2.4 - Prob. 11ECh. 2.4 - Prob. 12ECh. 2.4 - Prob. 13ECh. 2.4 - Prob. 14ECh. 2.4 - Convert the following radian measures to degrees....Ch. 2.4 - Prob. 16ECh. 2.4 - Prob. 17ECh. 2.4 - Prob. 18ECh. 2.4 - Prob. 19ECh. 2.4 - Prob. 20ECh. 2.4 - Prob. 21ECh. 2.4 - Prob. 22ECh. 2.4 - Prob. 23ECh. 2.4 - Prob. 24ECh. 2.4 - For Exercises 2532, complete the following table....Ch. 2.4 - Prob. 26ECh. 2.4 - Prob. 27ECh. 2.4 - Prob. 28ECh. 2.4 - Prob. 29ECh. 2.4 - For Exercises 2532, complete the following table....Ch. 2.4 - Prob. 31ECh. 2.4 - Prob. 32ECh. 2.4 - Find the following function values without a...Ch. 2.4 - Find the following function values without a...Ch. 2.4 - Prob. 35ECh. 2.4 - Prob. 36ECh. 2.4 - Prob. 37ECh. 2.4 - Prob. 38ECh. 2.4 - Find the following function values without a...Ch. 2.4 - Prob. 40ECh. 2.4 - Find the following function values without a...Ch. 2.4 - Find the following function values without a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find the following function values without using a...Ch. 2.4 - Find all values of x between 0 and 2 that satisfy...Ch. 2.4 - Find all values of x between 0 and 2 that satisfy...Ch. 2.4 - Find all values of x between 0 and 2 that satisfy...Ch. 2.4 - Find all values of x between 0 and 2 that satisfy...Ch. 2.4 - Prob. 53ECh. 2.4 - Prob. 54ECh. 2.4 - Prob. 55ECh. 2.4 - Prob. 56ECh. 2.4 - Prob. 57ECh. 2.4 - Prob. 58ECh. 2.4 - Prob. 59ECh. 2.4 - Use a calculator to find the following function...Ch. 2.4 - Prob. 61ECh. 2.4 - Prob. 62ECh. 2.4 - Find the amplitude a and period T of each...Ch. 2.4 - Find the amplitude a and period T of each...Ch. 2.4 - Find the amplitude a and period T of each...Ch. 2.4 - Find the amplitude a and period T of each...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Graph each function defined as follows over a...Ch. 2.4 - Prob. 75ECh. 2.4 - Prob. 76ECh. 2.4 - Prob. 77ECh. 2.4 - Transylvania Hypothesis The Transylvania...Ch. 2.4 - Prob. 79ECh. 2.4 - Prob. 80ECh. 2.4 - Prob. 81ECh. 2.4 - Prob. 82ECh. 2.4 - Prob. 83ECh. 2.4 - Prob. 84ECh. 2.4 - Prob. 85ECh. 2.4 - Prob. 86ECh. 2.4 - Sound Suppose the A key above Middle C is played...Ch. 2.4 - Temperature The maximum afternoon temperature in...Ch. 2.4 - Temperature A mathematical model for the...Ch. 2.4 - Prob. 90ECh. 2.4 - Prob. 91ECh. 2.4 - Prob. 92ECh. 2.CR - Prob. 1CRCh. 2.CR - Prob. 2CRCh. 2.CR - Prob. 3CRCh. 2.CR - Prob. 4CRCh. 2.CR - Determine whether each of the following statement...Ch. 2.CR - Prob. 6CRCh. 2.CR - Prob. 7CRCh. 2.CR - Prob. 8CRCh. 2.CR - Prob. 9CRCh. 2.CR - Prob. 10CRCh. 2.CR - Prob. 11CRCh. 2.CR - Prob. 12CRCh. 2.CR - Prob. 13CRCh. 2.CR - Prob. 14CRCh. 2.CR - Prob. 15CRCh. 2.CR - Prob. 16CRCh. 2.CR - Prob. 17CRCh. 2.CR - Prob. 18CRCh. 2.CR - Prob. 19CRCh. 2.CR - Prob. 20CRCh. 2.CR - Prob. 21CRCh. 2.CR - Prob. 22CRCh. 2.CR - Prob. 23CRCh. 2.CR - Prob. 24CRCh. 2.CR - Prob. 25CRCh. 2.CR - Prob. 26CRCh. 2.CR - Prob. 27CRCh. 2.CR - Prob. 28CRCh. 2.CR - Prob. 29CRCh. 2.CR - Prob. 30CRCh. 2.CR - Prob. 31CRCh. 2.CR - Prob. 32CRCh. 2.CR - Prob. 33CRCh. 2.CR - Prob. 34CRCh. 2.CR - Prob. 35CRCh. 2.CR - Prob. 36CRCh. 2.CR - Prob. 37CRCh. 2.CR - Prob. 38CRCh. 2.CR - Prob. 39CRCh. 2.CR - Prob. 40CRCh. 2.CR - Prob. 41CRCh. 2.CR - Prob. 42CRCh. 2.CR - Prob. 43CRCh. 2.CR - Prob. 44CRCh. 2.CR - Prob. 45CRCh. 2.CR - Prob. 46CRCh. 2.CR - Prob. 47CRCh. 2.CR - Prob. 48CRCh. 2.CR - Prob. 49CRCh. 2.CR - Prob. 50CRCh. 2.CR - Prob. 51CRCh. 2.CR - Prob. 52CRCh. 2.CR - Prob. 53CRCh. 2.CR - Prob. 54CRCh. 2.CR - Prob. 55CRCh. 2.CR - Prob. 56CRCh. 2.CR - Prob. 57CRCh. 2.CR - Prob. 58CRCh. 2.CR - Prob. 59CRCh. 2.CR - Prob. 60CRCh. 2.CR - Prob. 61CRCh. 2.CR - Prob. 62CRCh. 2.CR - Prob. 63CRCh. 2.CR - Prob. 64CRCh. 2.CR - Prob. 65CRCh. 2.CR - Prob. 66CRCh. 2.CR - Prob. 67CRCh. 2.CR - Prob. 68CRCh. 2.CR - Prob. 69CRCh. 2.CR - Prob. 70CRCh. 2.CR - Prob. 71CRCh. 2.CR - Prob. 72CRCh. 2.CR - Prob. 73CRCh. 2.CR - Prob. 74CRCh. 2.CR - Prob. 75CRCh. 2.CR - Prob. 76CRCh. 2.CR - Prob. 77CRCh. 2.CR - Prob. 78CRCh. 2.CR - Prob. 79CRCh. 2.CR - Prob. 80CRCh. 2.CR - Prob. 81CRCh. 2.CR - Prob. 82CRCh. 2.CR - Prob. 83CRCh. 2.CR - Prob. 84CRCh. 2.CR - Prob. 85CRCh. 2.CR - Prob. 86CRCh. 2.CR - Prob. 87CRCh. 2.CR - Prob. 88CRCh. 2.CR - Prob. 89CRCh. 2.CR - Prob. 90CRCh. 2.CR - Find each function value without using a...Ch. 2.CR - Prob. 92CRCh. 2.CR - Prob. 93CRCh. 2.CR - Prob. 94CRCh. 2.CR - Prob. 95CRCh. 2.CR - Prob. 96CRCh. 2.CR - Prob. 97CRCh. 2.CR - Prob. 98CRCh. 2.CR - Prob. 99CRCh. 2.CR - Prob. 100CRCh. 2.CR - Prob. 101CRCh. 2.CR - Prob. 102CRCh. 2.CR - Prob. 103CRCh. 2.CR - Prob. 104CRCh. 2.CR - Prob. 105CRCh. 2.CR - Prob. 106CRCh. 2.CR - Glucose Concentration When glucose is infused into...Ch. 2.CR - Prob. 108CRCh. 2.CR - Cancer growth Cancer cells often have a diameter...Ch. 2.CR - Prob. 110CRCh. 2.CR - Respiratory Rate Researchers have found that the...Ch. 2.CR - Prob. 112CRCh. 2.CR - Prob. 113CRCh. 2.CR - Prob. 114CRCh. 2.CR - Prob. 115CRCh. 2.CR - Prob. 116CRCh. 2.CR - Prob. 117CRCh. 2.CR - Prob. 118CRCh. 2.CR - Prob. 119CRCh. 2.CR - Prob. 120CRCh. 2.CR - Prob. 121CRCh. 2.CR - Prob. 122CRCh. 2.CR - Prob. 123CRCh. 2.CR - Prob. 124CRCh. 2.CR - Prob. 125CRCh. 2.CR - Prob. 126CRCh. 2.CR - Temperature The table lists the average monthly...Ch. 2.EA - Determine whether each of the following statement...Ch. 2.EA - Prob. 2EA
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