Growth and Decay Factors Answers

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Which of the following is false for an exponential growth function y = C(1 + r)t?

when C > 0, the function decreases from left to right

the function has a y-intercept of (0, C)

the graph of this function will be identical to the graph of y = abx, if a = c and b = 1 + r

if C > 0 and r > 0, then the graph will only have positive y-values.

What is the annual compound interest rate for an investment account modeled by the function y = 12 * 1.14t?

0.14%

12%

14%

114%

How much money will be in a bank account after 4 years if $8 is deposited at an interest rate of 5%?

$12.00

$10.41

$16.00

$9.72

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