Inequalities

Feb 2013
42
0
New York City
A video store has two movie-rental plans. Plan A includes a $25 membership fee plus $1.25 for each movie rental. Plan B costs $40 for unlimited movie rentals. For what number of movie rentals is plan B less than plan A?
 
Dec 2013
2,002
757
Colombia
If we rent $n$ movies, plan A costs $25 + 1.25n$.
Plan B costs $40$.

So we wish to solve $40 \lt 25 + 1.25n$ for some natural number $n$ (because we can't rent negative or fractional films).
 

chiro

MHF Helper
Sep 2012
6,608
1,263
Australia
Hey chels20000.

Can you formulate an expression for the price of so many movie rentals? You will have two formulas for each plan and then you will be solving an inequality.
 
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