Question

Decide whether the function is an exponential growth or exponential decay function, and find the constant percentage rate of growth or decay. (2 points)
f(x) = 2229 ⋅ 0.9909x


Exponential decay function; -0.91%

Exponential growth function; -0.91%

Exponential growth function; 0.0091%

Exponential decay function; 0.0091%

Answer 1

f(x) = 2229 ⋅ 0.9909^x

the number raised to x (0.9909) determines whether this is growth/decay and by how much. because it's less than 1, it's decay. 1 - 0.9909 gives the decay rate as a decimal, multiply by 100% to get the decay rate.