Question

Given f(x) = 7x - 9 and g(x) = x2, choose
the expression for (fºg)(x).

Answer 1

f[g(x)]

7(x^2)-9

Explanation:

(fºg)(x) read: f of g of x. And can be seen written like in this format: f[g(x)]. Which I prefer.

The expression f[g(x)] means that you put the expression g(x) into the x variable for f(x). Comment if you need a better explanation :)