Question

h(x) = 4x – 2
f(x) = 6x3
g(x) = x2 +5
a) (f +g+h)(3) =

Answer 1

$h(x) = 4x - 2 \\ f(x) = 6 {x}^{3} \\ g(x) = {x}^{2} + 5 \\ \\ (f + g + h)( 3) = f(3) + g(3) + h(3) \\ = 6 ({3}^{3} ) + ( {3}^{2} ) + 5 + 4(3) - 2 \\ = 6(27) + 9 + 5 + 12 - 2 \\ = 162 + 9 + 5 + 10 \\ = 162 + 24 \\ = 186$