Question

What is f(4) for the function f(x) = 2x + 5?
f(4) =

Answer 1

13

Explanation:

f ( x ) = 2x + 5

To find : f ( 4 )

f ( 4 ) = f ( x )

Here,

x = 4

So,

f ( 4 ) = 2 ( 4 ) + 5

= 2*4 + 5

= 8 + 5

f ( 4 ) = 13

Answer 2

f(4) = 13

Explanation:

f(4) = 2(4)+5
f(4) = 13