Question

Let f(x) = 4x-5 and g(x) = 3x, find (fg)(x).

Answer 1

Here, f(x) = 4x-5 and g(x) = 3x. He is asking what is (fg)(x). This means he is asking f(g(x)). Which will be 4 (3x) - 5.

This equation will again come down to 12 x - 5. This is a common equation that is found in a lot of mathematics tests for higher standards.