The graph shows the function f(x) = 2^x
What is the value of x when f(x) = 4?
O A. 2
O B. 3
O C. 1
O D.O
![The graph shows the function fx 2x What is the value of x when fx 4 O A 2 O B 3 O C 1 O DO class=](https://us-static.z-dn.net/files/d1c/72a1e508156a7ca4218cc267e19c7b9b.png)