Marie was trying to show her friend why -3 × -8 equals a positive product. this is what she wrote: -3 × 0 = 0 -3 × = 0 -3(8) + -3(-8) = 0 -24 + 24 = 0 what should marie write in place of the question mark? a. 8 + 8 b. -8 + (-8) c. 8 + (-8) d. -8 + 0

the answer would be c

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