Question

How can you find f(2) if f(x) =3x2 -7

Answer 1

You have to put 2 in for ’x’

Answer 2

Answer:
`f(2) = 5`

Explanation:

Given:

`f(x) = 3x^(2)-7`

To find
`f(2)` , all we need do is to substitute 2 for x in the given function

That is :

`f(2) = 3(2^(2))-7`

`f(2) = 3(4) - 7`

`f(2) = 12 - 7`

`f(2) = 5`

Therefore :

`f(2) = 5`