Question

what is the value of f(5) for the function f(x)-9${x}^{2}$

Answer 1

a) A -16 and b) f(5) = -16

1) Let's check what's the value of the Range for the element of the Domain, x =9

f(x) =9-x² Plug into x, the value of 5

f(5) = 9 - (5)²

f(5) = 9 -25

f(5) = -16

2) Hence, the answer is a) A -16 and b) f(5) = -16