Last week Matilda earned $103.50 for babysitting nine hours. She will earn $138 this week when she works for twelve hours. Which of the following equations could Matilda use to find the
constant of proportionality if she earns the same hourly rate?

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

constants mean the stopped points or the points on a graph that nothing is changing, hope this

step-by-step explanation:

answer: 0.26

i used the calculator on google

all of the measures need to be converted to the same measure; such as inches. if you do that it is easy to determine which is the longest, 2500 mm which is approximately 97.5 inches.