Question 1134541
{{{f(x)=100+25x}}}

Average rate of change: {{{(f(10)-f(2))/(10-2)}}}

= {{{(100+250-(100+50))/(10-2)}}}
= {{{200/8}}}
= $25/month

A simpler approach will be asking yourself how much does she deposit per month?
Isn't just $25?



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