Test — Test Answers

Given the following equation of an exponential function determine the base, b, of the exponential model. Is the base a growth or decay factor? a. b is 1.0394; It is a growth factor. b. b is 1.0394; It is a decay factor. c. b is 40.25; It is a growth factor. d. b is 40.25; It is a decay factor. Please select the best answer from the choices provided

Given the following equation of an exponential function determine the base, b, of the exponential model. Is the base a growth or decay factor? a. b is 0.6394; It is a growth factor. b. b is 0.6394; It is a decay factor. c. b is 20.5; It is a growth factor. d. b is 20.5; It is a decay factor. Please select the best answer from the choices provided

The table shows the estimated number of bees, y, in a hive x days after a pesticide is released near the hive.

Marta’s mother shared a funny video of their cat on the Internet. The total number of people who had viewed the video over the first 30 days could be modeled using the function f(x) = 33(1.3)x where x is the number of days the video has been online.

The number of VHS movie rentals has declined since the year 2000 due to the popularity of DVDs, as the following table shows. Use a graphing calculator to determine the exponential regression equation that best fits the VHS rental data. Let x represent the number of years since 2000. Year 2000 2001 2002 2003 2004 2005 2006 VHS Rentals (in millions) 10.5 7.8 6.3 5.1 4.4 3.6 3.1 a. y = 9.75(0.08197)x c. y = 9.87(0.8213)x b. y = 10.50(0.08217)x d. y = 10.50(0.80662)x Please select the best answer from the choices provided