Topic Test Answers

Find the missing values for the exponential function represented by the table below.xy-28-1120181 2

Interpret the following exponential function: What is the growth/decay factor? What is the y-intercept?

The population, P, of six towns with time t in years are given by the following exponential equations: (i) (ii) (iii) (iv) (v) (vi) Which towns are decreasing in size?

Interpret the following exponential function: What is the growth/decay factor? What is the y-intercept?

Today's newspaper contains a 20%-off coupon at Old Army. The $100 jacket that you want was already reduced by 40%. What as the final price that you paid for the jacket?

The number of VHS movie rentals has declined since the year 2000 due to the popularity of DVDs, as the following table shows. The exponential regression equation was found to be where x represents the number of years since 2000. Use the regression equation to predict the number of VHS movies in 2011. Year 2000 2001 2002 2003 2004 2005 2006 VHS Rentals (in millions) 10.5 8.1 6.4 5.2 4.5 3.8 3.1

You recently purchased a new snowboard for the upcoming winter. The board, with bindings, came out to be $315.32. You were told that the store was running a sale on the make and model of snowboard that you purchased and, because you were a member of the shop, you received an additional discount. If the store discount on the make and model of board that you purchased is 15% and the shop member discount is 5%, then determine the original price of the item. Round your answer to the nearest cent.

A 30-gram sample of bacteria has some unknown disease that is killing the bacteria. The amount of bacteria is measured each day and the results are shown in the table. Number of Days (d)Amount of Bacteria in Grams (A)030128.5227.075325.72424.44523.21622.05What is the decay factor of this data?

The cost of first-class postage in the United States increased approximately 5.4% in January of 2006 to 39 cents. What was the pre- January cost of the first-class stamp? Round your answer to the nearest penny.

The population, P, of six towns with time t in years are given by the following exponential equations: (i) (ii) (iii) (iv) (v) (vi) Which towns are growing in size?

The number of VHS movie rentals has declined since the year 2000 due to the popularity of DVDs, as the following table shows. Decide which scatterplot is representative of the data and determine if the data would be better modeled by a linear model or by an exponential model. Year 2000 2001 2002 2003 2004 2005 2006 VHS Rentals (in millions) 10.5 8.1 6.3 5.5 4.1 3.8 3.1 Graph A Graph B

Given the following table, determine the missing value.Growth Factor1.13?1.281.97Percent13%256%28%97%

The table of values below represent an exponential function. Write an exponential equation that models the data. x y -2 24 -1 16.8 0 11.76 1 8.232 2 5.7624 a. c. b. d. Please select the best answer from the choices provided

You just obtained a credit card. You immediately purchase a digital camera for $160. Your credit limit is $4000. Let’s assume that you make no payments and purchase nothing more and there are no other fees. The monthly interest rate is 1.42%.What is the growth factor of your credit card balance?

The annual inflation rate is 3.5% per year. If a movie costs $7.50, determine which of the following graphs best models the change in price, with respect to time, of the movie ticket. a. c. b. d. Please select the best answer from the choices provided

You have just graduated from college and purchased a car for $8000. Your credit limit is $11,000. Assume that you make no payments and purchase nothing more and that there are no other fees. The monthly interest rate is 2%. What is your initial credit card balance?

Given the table below, determine if the data represents a linear or an exponential function and find a possible formula for the function. x 0 1 2 3 4 f(x) 0 2 4 6 8

Twenty years ago a small town in Texas had a population of 10,000. The population has increased 8% each year since then. What is the growth factor that would be used to solve this problem?

The table of values below represent an exponential function. Write an exponential equation that models the data. x y -2 26 -1 18.2 0 12.74 1 8.918 2 6.2426 a. c. b. d. Please select the best answer from the choices provided