Question

If f(x)= 6x-4, what is f(x) when x=8

Answer 1

`f(8)= 44`

Explanation:

We substitute the value of x = 8 where we see the variable x in the given function.

The funcion is:

`f(x)= 6x-4`

substituting x = 8

`f(8)= 6(8)-4`

solving operations, remembering that multiplications are resolved first than substractions.

`f(8)= 48-4`

`f(8)= 44`

Answer 2

`f(x)=6x-4 \\ \\ f(8)=6 \cdot8-4=48-4= \boxed{44}`