Question

Evaluate 12x2 + 39x + 30 at x = 3.

Answer 1

Answer:

255

Step-by-step explanation:

f(x) = $12x^{2}$ + 39x + 30

f(3) = 12(3)$^{2}$ + 39(3) + 30

= 108 + 117 + 30

= 255

Answer 2

Answer:

255

Step-by-step explanation:

12x^(2) + 39x + 30

x = 3

Substitute in"3" for "x" and solve;

12(3)^(2) + 39(3) + 30

= 12 * 9 + 117 + 30

= 108 + 117 + 30

= 255