Question

If f(x)=2x+5, then what is f(3)?

Answer 1

`\Large \boxed{f(3)=11}`

Explanation:

`f(x)=2x+5`

For f(3), the input for the function f(x) is 3.

Let x (input) = 3.

`f(3)=2(3)+5 \\\\ f(3)=6+5 \\\\ f(3)=11`

Answer 2

11

Explanation:

f(x)=2x+5

Let x = 3

f(3) = 2*3+5

= 6+5

= 11