Question

If f(x)=2x+8, find f(5).

and

if f(x)=3x+4, find f(8)​

Answer 1

`f(x) = 2x + 8 -- > f(5) = 2(5) + 8 = 10 + 8 = 18\\\\f(x) = 3x +4 -- > f(8) = 3(8) + 4 = 24 + 4 = 28`

Good day and hope that helps!