you spend $13 to rent five movies for the weekend. since new releases rent for $3 and regular movies rent for $2, how many ragular movies did you buy?

Question

So far i have the equation $3n+$2r=$13
(n=new release, and r=regular)
can anyone give me a clue as to what the second equation might be, or how i could find it?

Answer 1

3n + 2r = 13 is correct.
You are also told that
n + r = 5.
Therefore
3(5-r) + 2r = 13
15 -r = 13
r = 2
n = 3

Answer 2

this was 2008... dang