Question

If f(x)=-2x+3, g(x)=5x^2+4x-5, and h(x)=7x^2-8, find h(4)

Answer 1

Asked to find h(4). Hence, we don not need f(x) and g(x).

Substitute x=4 in h(x).

so, h(4) = 7*(4)^2 - 8 => 112 - 8 => 104

hope it helps.