One math student, john, can solve 6 math problems in 20 min while another student, juaquine, can solve the same 6 math problems at a rate of problem per 4 min. who works faster?

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

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

do have an equation or graph or

step-by-step explanation:

i think the answer would be c