Question

Given f(x) = 9x - 5 and g(x) = x², choose
the expression for (fºg)(x).

Answer 1

9x² -5

Explanation:

(f○g)(x) means f(g(x))

Put the definition of g(x) in place of x in the definition of f(x):

f(g(x)) = f(x²) = 9(x²) - 5

(f○g)(x) = 9x² - 5