Question 1190939
Find the missing quantity with what you already know.  
{{{A=Pe^(rt)}}}
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The given quantities will be A, r, and t; so the missing quantity to find will be P.   note that {{{13_percent=0.13}}}.  You already know to find "e" value from your text book or some table.  


{{{P=A/(e^(rt))}}}
Now just substitute your given values and compute.