Which model describes the Realationship between sales and money raised

Question

The math club is having a fund raiser selling mugs for $5 each and t-shirts for $10 each. The club raised $1000.

Answer 1

The model that describes the relationship between sales and money raised would be:

10x, given x is the number of shirts, and 5y, given y is the number of mugs.

So 10x+5y=1000 would describe this situation, since the sale of those items resulted in $1000. More information would be needed, such as the number of items sold, to find x and y.