Question

Find f(-2) for the following problems.

Problem A: f(x) = x3 + 5
Problem B: f(x) = x2 - 2
Which statement is correct?
a
Problem A > Problem B
b
Problem A < Problem B
Problem A = Problem B
d
Cannot be determined

Answer 1

a. Problem A > Problem B

Explanation:

Problem A:

f(x) = x3 + 5

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

f(-2) = (-6) + 5

f(-2) = -1

Problem B:

f(x) = x2 - 2

f(-2) = (-2)2 - 2

f(-2) = (-4) - 2

f(-2) = -6