Question

If h(x) = x - 7 and g(x) = x^2, which expression is equivalent to (gºh) (5)?

(5 – 77)²
(5)^2 -7
(5)^2(5 – 7)
(5 – 7)x²

Answer 1

Answer: a) (5 - 7)²

Explanation:

g(x) = x^2 h(x) = x - 7

h(5) = 5 - 7

g(h(5)) = g(5 - 7) = (5 - 7)² Replace the x in g(x) with (5 - 7)