The graph shows the function f(x)=2^x. what is the value of x when f(x)=8?

Question

asked Mar 4, 2019 176k views

2 Answers

Rosefun · Answer 1 · 2019-03-10T19:46:30+0000

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