the average monthly bill for wireless subscribers from 1985 to 2008 can be modeled by b(x)--1.217x+97.299, where x is the number of years after 1980. if this model remains valid,l in what year will the average monthly bull be $43.75?

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A: Given that,  s(t) = -16t2 + 80t We have to find t for which s(t)>64

Q: Suppose the price P, in peso, of a Honda Civic EX-L sedan that is x years old co by P(x) = 1,113,250…

A: Given that:Price of car is modeled as well P(x) =1113250(0.90) x

Q: Solve for the second-order derivative of: [(4x3-1)(8x2+6x-3)]3

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A: To differentiate the given rational function (quotient) in the required (factored) form

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A: Given : The daily cost C of manufacturing bicycles is given by C(x) = 80x + 5000. Then the average…

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Q: Suppose in 2009, there were about 8 million Internet users in the Philippines. The number of…

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Q: 3x² (9 – x² ) 2 2 (9 — 3х2)

A:

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A:

Q: The annual net sales (revenue) earned by Nintendo in the fiscal years 2000 - 2014, can be…

A: R(t) = Annual net sales revenueR(t) = -3.75t3 +65.8t2-206t + 578    (billion yen per year)When start…

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Q: Find the First derivative of 5x/2 4x %3D

A:

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A: The number of bacteria growing in an incubator culture increases with time according to the function…

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Q: A researcher predicts that the population of a certain city will double every 70 years. In 1946, the…

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Q: A small newspaper company is downsizing and has lost employees at a steady rate. Twelve months ago…

A: Multiple questions-"As per our guidelines we are suppose to answer only one question.Kindly re-post…

Q: the years from 2002 and projected to 2024, the national health care expenditures H, in billions of…

A:

Q: For the years from 2002 and projected to 2024, the national health care expenditures H, in billions…

A: To find number of years from 2000 find value of t for:…

Q: Suppose chad has $5000 to invest. If he invest $3000 at 5% interest, at what rate must he invest the…

A: solution of the given problem is below...

Q: Two cars are headed for the intersection of the two roads. If Car A is travelling south at 45 km/h…

A:

Q: Find the first derivative of: y= x5 3√9-3x2

A: y=x5 9-3x23⇒y=x59-3x213

Q: For the years from 2006 and projected to 2021, the national health care expenditures H, in billions…

A: The given equation for the health care expenditures(in billions) is H=2009e0.0519t where t is the…

Q: Find the second derivative of y² + 2x³ = 1 – 4y

A: The given equation is y2+2x3=1-4y Rewrite as  y2+2x3+4y=1 differentiate…

Q: According to the U.S. Census Bureau, the population of the United States in 2008 was 304 million…

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Q: The population of a district in a town is known to increase at a rate proportional to the number of…

A: We will find out the required initial population of the state .

Q: For the years from 2002 and projected to 2024, the national health care expenditures H, in billions…

A: H=1,500e^0.053t

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Q: A group of scientists studied the effect of a chemical on various strains of bacteria. Strain A…

A: Linear equations

Q: A $25,000 machine depreciates linearly to 0 over a 10 year period. What is the valye of the machine…

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Q: 1. Find the derivative of (a + 3x + 8) (3x' - 7x + 2).

A: The given function is x2+3x+83x4-7x+2

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A:

Q: If in the year 2000 there were 1.26 million metric tons of beef produced and demand is growing at a…

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Q: Find the second derivative of y² + 2x³ =1– 4y

A:

Q: The number of banks in the country for selected years from 1980 to 2009 is given by y = -378.9x +…

A: Given,           The number of banks in the country for selected years from 1980 to 2009 is given by…

Q: Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 feet per…

A: Given that,  intial water level of river =34 feet receding rate of water level = 0.5 feet per day…

Q: Since the 2-score in freestyle is [Select] score in backstroke, his time in freestyle when compared…

A: here use z-score  z = x- μσ

Q: A manufacturer of handcrafted wine racks has determined that the cost to produce x units per month…

A: A manufacturer of handcrafted wine racks has determined that the cost to produce x units per month…

Q: A dead fish was found inside a compartment that is able to maintain a constant temperature of 373…

A: let D be the body temperature at t seconds according to question, initially , at time t=0D=900…

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Q: Find, the derivative of y= 5x e" + 6x3 y':

A:

Q: Q 4. Use ab-initio method and find the derivative of 3x +5x² – 2x-12.

A: ab-initio method is nothing but differentiating the function using basic principle of…