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?
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?
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
this was 2008... dang
To find the second equation, we need to use the information given in the problem. We know that you rented a total of 5 movies for a cost of $13. Let's assume you rented "n" new releases and "r" regular movies.
From the given information, we can write the equation:
3n + 2r = 13
Now, to find the second equation, we need another piece of information. Is there any more data given in the problem that can help us?
To find the second equation or solve for the number of regular movies, we can use the information given and set up another equation based on the total number of movies rented.
Let's say we rented 'n' new release movies and 'r' regular movies. The total number of movies rented can be represented by the equation:
n + r = 5
This equation represents the fact that the total number of new release movies and regular movies rented is equal to 5.
Now, let's substitute the value of 'n' from the first equation into the second equation:
n = (13 - 2r) / 3
Substituting this value of 'n' into the second equation:
(13 - 2r) / 3 + r = 5
We can simplify this equation by multiplying both sides by 3 to remove the fraction:
13 - 2r + 3r = 15
Combine like terms:
r = 2
So, you rented 2 regular movies.