Answer:

Explanation:
You have the following information given in the problem:
- She works as a tutor for $8 an hour and a waitress for $9 an hour.
- The total hours she worked at her two jobs is 100 hours.
Therefore, have:
(
is the total of hours she worked at his job as a waitress)
(
is the total dollar amount she earned this month)
Substitute
into the
and simplify. Then, the expression asked is:


