Question

Given the function below, find f(-5):

f(x)= x^2 + 3x - 21

(A) -61
(B) -11
(C) -31
(D) 19
(E) 10

Answer 1

(B) -11.

Explanation:

To find f(-5), we substitute -5 for x in the given function:

f(-5) = (-5)^2 + 3(-5) - 21

= 25 - 15 - 21

= -11

Therefore, the value of f(-5) is -11.

So, the answer is (B) -11.