Question

Evaluate the following expression using the values given:

Find 4x - y - 2z if x = -2, y = 3, and z = -2

-15
15
-7
7

Answer 1

4x - y - 2z
If you plug in the values you'll end up ;
4(-2) - (3) - 2(-2)
4 * -2 = -8
3 = 3
2 * -2 = -4
so -8 - 3 - -4
Since there's a subtraction sign in front of a negatie, it becomes positive
so -8 - 3 + 4

Answer 2

than -8-3 would be -11 than -11+4 would be -7 right?

Answer 3

Yep :)

Answer 4

thanks for your help

Answer 5

Anytime :P