Answer:
(D) 5
Step-by-step explanation:
Step one:
If f(x)=y, find (0,5).
Step two:
Draw a line horizontally across (0,4). When you hit the curving line, you should get (5,4). The value of x is 5, so your answer should be 5.
NOTE:
I messed up on my previous answer but it was removed.
