Students have a choice between taking a test on paper or on the computer. mrs. gazi graphed the relationship between the number of students taking the test on the computer and the number of test pages she would need to print.

x^6

step-by-step explanation:

this is correct because:

x-6=0

0*x=0

so

x^6

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