Answer:
A)
is the expression to represent total amount of money she earns babysitting for Smith family.
B)
she will earn for Smith family for 7 hours
C) It would take
for Margie to make
when babysitting for the Smith family
Explanation:
Given.
Mr. and Mrs. Smith pay Margie
an hour to babysit their son, Shea.
Mr. and Mrs. Jones pay Margie $8 an hour to babysit their children, Sarah, Susan, and Dawn.
Let x be number of hours.
Solving for Part A.
Amount of Money earn from Smith family = Pay per hour
Number of hours =

Solving for Part B.
x=7
Margie earns from smith family for 7 hours =

Solving for part C.
Margie earned =

To find number of hours
No of hour Margie has done babysitting for Smith family