18.) (h of f)(-2)? - -- (20.) g of h)(4)? ------ (22.) (f of h) (5)?

Question

let f (x) = 11x, g(x)= x^2-5, h(x)= 2(x-4) evalute each compostie function
please help

Answer 1

h(f(x)) = 2(11x-4) = 22x-8; h(f(-2)) = 22(-2)-8 = -52
g(h(x)) = (2(x-4))^2-5 = 2x^2-16x +32-5 = 2x^2-16x +27
g(h(4)) = 2*4^2 -16*4 +27 = 32-64+27= -5
f(h(x)) = 11*2(x-4) =22x -88; f(h(5)) = 110-88 = 22

Answer 2

(h o f)(-2)=h(-22)=-52
(g o h)(4)=g(0)=-5
(f o h)(5)=f(2)=22