Question 1193391
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Raina works as a tutor for $7 an hour and as a waitress for $12 an hour. 
This month, she worked a combined total of 97 hours at her two jobs.
Let t be the number of hours Raina worked as a tutor this month. 
Write an expression for the combined total dollar amount she earned this month.
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            Tutor @Theo misread the problem,  so his writing is not what is required in the problem.


            I came to do the job in a way in how it  SHOULD  be done.



<pre>
If Raina worked a combined total 97 hours at her two jobs and worked t hours as a tutor,
then she worked (97-t) hours as a waitress.


As a tutor, she earned 7t dollars;  as a waitress, she earned 12*(97-t) dollars.


In total, she earned  7t + 12*(97-t) dollars, combined.


<U>ANSWER</U>.  In total, Raine earned 7t + 12*(97-t) dollars.
</pre>

Solved.



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In such simple problems, writing governing equations/equation is, &nbsp;usually, &nbsp;quite simple and routine task.

The standard mantra in doing such job is to say &nbsp;" write equation as you read the problem ".



Some tutors like to present such job as complicated high intellectual heroic job, &nbsp;but actually it is as simple as reading the problem.

It only requires attention while reading and a bit of common sense.



The student's goal is to learn on writing such equations &nbsp;AUTOMATICALLY.


Normally, &nbsp;each such problem can be done in &nbsp;5 - 10 &nbsp;seconds.