Question

The function F is defined by f(x) = 3x-5 over x+6 find f(5x)

Answer 1

`(15x-5)/(5x+6)`

Explanation:

Given

f(x) =
`(3x-5)/(x+6)`

To evaluate f(5x) substitute x = 5x into f(x)

f(5x) =
`(3(5x)-5)/(5x+6)` =
`(16x-5)/(5x+6)`