Respuesta :

cat23k

Answer:

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

:)

Answer:

x=4

Step-by-step explanation:

since f(x )=8

8=2*x

we divide by 2 both side

so,

x=4