Question

Evaluate the function for x = 3a.

f(x) = 2x^2 – 3x +4
A. 9а
B. 6a^2- 9a + 4
C. 18a^2 - 9a +4
D. 12a^2 - 6a+4

Answer 1

C

Explanation:

We are given the function:

`f(x) = 2x^2 -3x+4`

And we want to evaluate it for x = 3a.

Substitute:

`f(3a) = 2(3a)^2-3(3a)+4`

Square:

`f(3a) = 2(9a^2)-3(3a)+4`

Simplify:

`f(3a) = 18a^2-9a+4`

Hence, our answer is C.