Which of the following numbers is the tenth number after the number that is before 10? a.) 20
b.) 18
c.) 19
d.) 21
e.) 17

c) 19

Step-by-step explanation:

Number before 10 = 9

tenth number after 9 = 19

Hope this helps!

c. 19

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