3. If x = 6, y = -2, and z = 3, what is the value of the following expression?
(x2 + xy)/z2
a. 2
b. 19
C. 2
d. 6

D. 6

Step-by-step explanation:

plug the numbers in for the variables then multiply using PEMDAS.

6(2) + 6(-2) / 3(2)

12-12=0 / 6

x = 6

x=30

step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10