Question

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

Answer 1

Answer: $f(2) = 5$

Step-by-step 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 :

$f(2) = 5$

Answer 2

You have to put 2 in for ’x’