Question

The function f is defined on the real numbers by f(x) = 2 + x − x2

What is the value of f(-3)?

Question 7 options:

A. 14

B. 8

C. -10

D. -4

Answer 1

Substituting -3 in the expression for f(x), we get:

f(-3) = 2 + (-3) - (-3)^2 = 2 - 3 - 9 = -10

Explanation:

Therefore, the value of f(-3) is -10.

Option C is the correct answer.

Answer 2

C

Explanation:

f(x) = 2 + x - x²

to obtain f(- 3) substitute x = - 3 into f(x)

f(- 3) = 2 + (- 3) - (- 3)²

= 2 - 3 - 9

= - 10