Question

If `h(n) = -2n^3 + 1` and `g(n) = -n-3`, what is `h(-2) + g(-2)`?

Answer 1

16

Explanation:

let's substitute n by -2 in the first one
`h(-2)=-2(-2)^3+1`
`h(-2)=16+1=17`

let's substitute n by -2 n the second one
`g(-2)=-(-2)-3`
`g(-2)=-1`

then

`h(-2)+g(-2)=17-1=16`