Question

Evaluate if x = −3 3x − 4 A) −13 B) −7 C) −1 D) 5

Answer 1

If x = -3, we need to plug in -3 for x (in parenthesis if it isn't already).

You current expression is:

3x -4
Plug -3 in for x

3(-3) -4.
When multiplying a negative by a positive, your product ends as a negative (unless you multiply by 0).

3(-3) = -9

Your expression now is:

-9 -(4).

When subtracting a negative from a negative, pretend you're just adding positives with positives, except your value sign is negative.

-9 -(4) = -13.

-13 is your solution.

I hope this helps!