Question

Can anybody help me with please. Use the equation f(x)= 5x-1, find f(3)

Answer 1

.8

why:

f(3) or any number is just a fancy way of saying x=3.

plug into the equation

3=5x-1

4=5x

divide your answers

.8

Answer 2

14

Explanation:

Plug in 3 where you see x

5(3)-1

15-1

14