Question

For the function f(x) = 2x +3, evaluate f(3).

Answer 1

`{ \tt{f(x) = 2x + 3}}`

f(3) means x = 3, substitute for x as 3 :

`{ \tt{f(3) = 2(3) + 3}} \\ = 6 + 3 \\ = 9`

Answer 2

9

Explanation:

f(3) = 2(3) + 3

= 9