Question

3) Let h(x)= |2x|-4. Find h(x) when x = -7.
a) -10
b) 10
c) -13
d) 13

Answer 1

`h(x) = 10`

Explanation:

Given

`h(x) = |2x| - 4`

`x = -7`

Find h(x)

Substitute -7 for x

`h(x) = |2*-7| - 4`

`h(x) = |-14| - 4`

Absolute values return positive. So:

`h(x) = 14 - 4`

`h(x) = 10`