A population of 200 rodents is growing at a rate of 5% per month. What equation model can represent that situation?

A $25,000 machine depreciates linearly to 0 over a 10 year period. What is the valye of the machine after 5 years? Select one: O 7500 O 17500 12500 10000 15000

Chapter 7, Section 7.3, Go Tutorial Problem 028 X Incorrect. A population grows at a rate of 6% per day. a) Find its doubling time. -0.25 days [Round your answer to 2 decimal places.] b) How long does it take for the population to quadruple? 0.493 days [Round your answer to 2 decimal places. Tolerance: + 0.02. ] Click if you would like to Show Work for this question: Open Show Work

One article shows a relationship between per capita health care spending h, in thousands of U.S. dollars per person per year, and life expectancy E, in years. The following formula is adapted from that article: E = 72.23 + 3.85h - 0.37h². We should point out that this article includes no justification for the type of model used. (a) Plot the graph of E versus h. Include spending levels from $1000 to $9000 per person per year (so a horizontal span of 1 to 9). E E 85 85 80 O 75 E 85 80 75 2 2 4 4 10 years 6 6 8 8 thousand dollars per person per year 2 80 75 O E 85 80 75 2 2 4 4 6 8 8 h (b) According to this model, what health care expenditure corresponds to maximum longevity? Round your answer in thousands of dollars per person per year to two decimal places. h (c) What optimum life expectancy is given by this model? (For comparison, in 2011, in the United States, per capita health care spending was $8745 and life expectancy was 78.7 years.)