Question

Isabel works as a tutor for $7 an hour and as a waitress for $15 an hour. This month, she worked a combined total of 104 hours at her two jobs.
Lett be the number of hours Isabel worked as a tutor this month. Write an expression for the combined total dollar amount she earned this month.

Answer 1

Answer:

7x + 15y

Step-by-step explanation:

Not sure what letter it wants me to use as variables, so I'll use my own.

I'm gonna let x = number of hours worked as a tutor

                      y = number of hours worked as a waitress

Since those hours all add up to 104, we add x and y to equal 104

x + y = 104

Since she earns $7 an hour as a tutor, multiply x by 7 like this: 7x

Since she earns $15 an hour as a waitress, multiply y by 15 like this: 15y

They both have to be added to find the total dollar amount she earned this month

7x + 15y = ?