Question

keiko works as a tutor for $8 an hour and a waitress for $9 an hour. This month, she worked a combined total of 100 hours at her two jobs. Let t be the number of hours keiko worked as a tutor this month. Write an expression for the combined total dollar amount she earned this month.​

Answer 1

Answer:
`T=800+t`

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:

`w=100-t` (
`w` is the total of hours she worked at his job as a waitress)

`T=8w+9t` (
`T` is the total dollar amount she earned this month)

Substitute
`w=100-t` into the
`T=8w+9t` and simplify. Then, the expression asked is:

`T=8(100-t)+9t`

`T=800-8t+9t`

`T=800+t`