Question

If f(3) = -15, then what is f^-1(-15)?

Answer 1

Answer:3

Explanation:

This is the basic definition of an inverse. f(3)=-15 means you plugged in 3 in the function, and you ended up with -15. The inverse means you plugged in some number x, and ended up with -15. Because f(3)=-15, the answer is 3.