Question

Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage rate of increase or decrease.

y=7900(1.09)^x

Answer 1

The function represents a growth. The percentage rate is 9%.

Explanation:

f(x)= a(1+r)^t

f(x) 7900 (1+.09)^x

Using the above equations, since the rate is greater than 1, that means the function represents growth. And to find the percentage rate, take the .09 and multiply it by 100 to convert it into a percentage.