Question

If f(x) = 2x +3, what is f(-3)? Show work.
A)-3/
B) -4
C) -5
D-6

Answer 1

-3

Explanation:

1. Subsitute x for -3

2. multiply 2(-3) = -6

3. add -6 +3

4. f(-3) is -3

Answer 2

f(-3) = -3

Explanation:

f(x) = 2x +3

Let x = -3

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

= -6+3

= -3