Question

H(x) = 16 - x, when x = -4

Answer 1

Here's what I'd recommend you do (to avoid problems with negative signs):

1. Re-write H(x) = 16 - x as H(x) = 16 - ( x )
2. Substitute -4 for x (inside those parentheses)

3. Show your work and your final result.

Answer 2

It'd be wise to write your result as H(-4) = 16 - (-4). H(-4) reads as "the value of function H(x) when x=-4."

Answer 3

A double negative configures into a positive value.

Answer 4

Understand?