Question

Use the function below to find f(-2)

f(x)=5^x

Answer 1

The answer is 0.04 because 5^-2= 0.04

Answer 2

f(-2) = 0.4

Explanation:

The given function is f(x) = 5ˣ

and we have to find the value of f (-2)

We will substitute x = -2 in the given function.

f(x) = 5ˣ

f(-2) = (5)⁻²

Since x⁻¹ =
`(1)/(x)`

so f(-2) =
`(1)/(5^2)`

`(1)/(25)`

= 0.04

Therefore, f(-2) = 0.4 is the answer.