Question

For the function ƒ(x) = 3x2 – 7, find the value of ƒ(x) when x = 3

Answer 1

Explanation:

Given

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

Now put x=3

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

=3(9)-7

=27-7

f(3)=20

therefore the value of f(x) at x=3 is 20

Answer 2

20

Explanation:

ƒ(x) = 3x^2 – 7

Let x=3

Evaluate the function

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

= 3*9 -7

= 27-7

= 20