<PRE><B>Question 1041353</B>
Question #1041128


{{{P[n]}}} for pounds of the waste after n months.


Quantity produced is quantity stored.
Nine pounds produced per month is a rate;  The independent variable is time, n, in months.  At count of 0 months, already is stored, 16 pounds of waste.  {{{P[0]=16}}}.


{{{highlight(P[n]=9n+16)}}}, which is the same form as {{{y=mx+b}}}, slope-intercept form for a line.



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P130 is not the conventional notation.  You are trying to ask for {{{P[130]}}} for which n=130.  You have the solved FORMULA to use now.</PRE>