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:   $T=800+t$

Step-by-step 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:

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

$T=800-8t+9t$

 $T=800+t$