If f(x) = 5x + 40, what is f(x) when x = -5?
_9
-8
7
15

15

Step-by-step explanation:

f(x) = 5x + 40

Let x = -5

f(-5) = 5*-5 +40

        -25+40

           15

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.

the answer would be 0.54