Question

Given the equation h(z)=2(z-4),find h(-2).

Answer 1

2(z-4)
2(-2-4)
2(-6)
12

Answer 2

`\boxed {\tt h(-2)= -12}`

Explanation:

We are given the function:

`h(z)=2(z-4)`

We want to find h(-2) so we must substitute -2 in for each z.

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

Now, solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.

Solve inside the parentheses first. Subtract 4 from -2.

`h(-2)=2(-6)`

Multiply 2 and -6.

`h(-2)=-12`

For h(z)= 2(z-4), h(-2)= -12