<PRE><B>Question 799351</B>
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\ +\ x\ +\ 5\ +\ x\ +\ 13\ =\ 3\,\cdot\,90]


Solve for *[tex \Large x]


The above presumes that each of the three exams have the same weight.  If they are different, then you need the weighting factors for each of the three exams and...


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ w_1x\ +\ w_m(x\ +\ 5)\ +\ w_f(x\ +\ 13)\ =\ 3\,\cdot\,90]


Solve for *[tex \Large x]



John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
&lt;font face=&quot;Math1&quot; size=&quot;+2&quot;&gt;Egw to Beta kai to Sigma&lt;/font&gt;
My calculator said it, I believe it, that settles it
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