Question

Evaluate the expression |4b - 4| + 3b for b = -2.

Answer 1

(4×-2-4) +3×-2
-8 + -6
-14

Answer 2

Hi there! The answer is 6.

In order to evaluate the expression |4b - 4| + 3b for b = -2 we must plug in b= -2 into the expression.


`|4 * - 2 - 4| + 3 * - 2 =`
Use PEMDAS so multiply first.


`| - 8 - 4| - 6 =`
Add.


`| - 12| - 6 =`
Work out the absolute value. The absolute value stripes make everything between those stripes positive.


`12 - 6 =`
Subtract


`6`
Therefore, the answer is 6.
~ Hope this helps you!