Question

Margie babysits for two families. Mr. and Mrs. Smith pay her $6.50 an hour to babysit their son, Shea. Mr. and Mrs. Jones pay Margie $8 an hour to babysit their children, Sarah, Susan, and Dawn.

A Use the variable x for the number of hours Margie babysits for the Smith family. Write an expression to represent the amount she earns babysitting for this family.

B How much would Margie earn babysitting for the Smith family for 7 hours?

C When babysitting for the Smith family, how long would it take Margie to earn $78?

Answer 1

A)
`\$ 6.5*x` is the expression to represent total amount of money she earns babysitting for Smith family.

B)
`\$45.5` she will earn for Smith family for 7 hours

C) It would take
`12 \ hrs` for Margie to make
`\$78` when babysitting for the Smith family

Explanation:

Given.

Mr. and Mrs. Smith pay Margie
`\$6.50` 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 =
`\$ 6.5 * x= \$ 6.5x`

Solving for Part B.

x=7

Margie earns from smith family for 7 hours =
`\$ 6.5x=\$6.5*7=\$45.5`

Solving for part C.

Margie earned =
`\$ 78`

To find number of hours

No of hour Margie has done babysitting for Smith family
`x=(\$78)/(\$6.5)=12 \ hrs`