Question 620917
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Let *[tex \LARGE x] be the number of nickels.  Then *[tex \LARGE x\ -\ 15] is the number of quarters, and *[tex \LARGE (x\ -\ 15)\ -\ 15] which is to say *[tex \LARGE x\ -\ 30] is the number of pennies.


Then *[tex \LARGE 5x] is the value of the nickels in cents, *[tex \LARGE 25(x\ -\ 15)] is the value of the quarters in cents, and *[tex \LARGE x\ -\ 30] is the value of the pennies in cents.  The total value, $15.17, can be expressed as 1517 cents, so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 5x\ +\ 25(x\ -\ 15)\ +\ x\ -\ 30\ =\ 1517]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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