Question 1144283
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40x + 2.5*(48-40)*x = 1230.


Simplify and solve for x. It will be your answer.
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Also MEMORIZE this:


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When you format your request in such a form


    rosalyn's regular hourly wage is $


showing that you are interested in only getting an answer with no explanations

--  then you works AGAINST YOUR BETTER INTERESTS.


In more short form and in more simple terms :  then you work AGAINST YOURSELF.
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Do you need more detailed explanations ?