Respuesta :

f(x)= 2ˣ

We have to find x when f(x) is 8

8=2ˣ

we can write 8 in exponential form as 2³

2³=2ˣ

here base is same (2) on both left and right side

comparing the powers we get

x=3

Rhino99howard

Answer:

3

Step-by-step explanation:

ap3x