Question

let f(x) = -4x + 7 and g(x) = 10x - 6 find f(g(x))

Answer 1

f(x) = -4x + 7
g(x) = 10x - 6

f(g(x)) = -4(10x - 6) + 7
f(g(x)) = -4(10x) + 4(6) + 7
f(g(x)) = -40x + 24 + 7
f(g(x)) = -40x + 31

Answer 2

f(g(x)) = -4(10x-6) + 7
 = -40x + 24 + 7
 = -40x + 31