Concept explainers
Reminder Round all answers to two decimal places unless otherwise indicated.
Catering a Dinner You are having a dinner catered. You pay a rental fee of
a. Suppose you just want to break even.
i. How much should you charge per ticket if you expect
ii Use a formula to express the amount you should charge per ticket as a function of the number of people attending. Be sure to explain the meaning of the letters you choose and the units.
iii. You expect
b. Suppose now that you want to make a profit of
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Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
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- LIFE SCIENCE APPLICATIONS Life Span Researchers have estimated the maximum life span in years for various species of mammals according to the formula L(E,P)=23E0.6P0.267, where E is the average brain mass and P is the average body mass both in g. Source: The Quarterly Review of Biology. Find L for the following species. Do these values seem reasonable? a. Black rat, with E=7.35g, P=150g b. Humans, with E=14,100g, P=68,700g c. d.arrow_forwardPay Raise You receive a raise in your hourly pay from 9.25 per hour to 9.50 per hour. What percentage increase in your pay does this represent?arrow_forwardImmigration The following graph shows immigrationin thousand to the United States has varied over the past century. Source: Homeland Security. a. Find the average annual rate of change in immigration for the first half of the century from 1905 to 1955. b. Find the average annual rate of change in immigration for the second half of the century from 1955 to 2005. c. Find the average annual rate of change in immigration for the entire century from 1905 to 2005. d. Average your answers to part a and b, and compare the result with your answer from part c. Will these always be equal for any two time periods? e. If the annual average rate of change for entire century continues, predict the number of immigrants in 2009. Compare answer to the actual number of 1,130,818 immigrants.arrow_forward
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