Question

A.

If f(x) = 25 - xand g(x) = 5 - , which is the rule of function (8 + 9)(x)?
-x2 + x+ 20
5 + x
x? - 5x2 - 25x + 125
--X2 - x + 30
b.
C.
d.
Please select the best answer from the choices provided

Answer 1

The answer is D.

Explanation:

You have to add both functions together :

`f(x) = 25 - {x}^(2)`

`g(x) = 5 - x`

`(f + g)(x) = 25 - {x}^(2) + 5 - x`

`(f + g)(x) = 30 - {x}^(2) - x`

`(f + g)(x) = - {x}^(2) - x + 30`