Jillian is selling boxes of cookies to raise money for her basketball team. the 10 oz. box costs $3.50, while the 16 oz. box costs $5.00. at the end of one week, she collected $97.50, selling a total of 24 boxes. the system of equations that models her sales is below.
x y= 24
3.50x 5.00y = 97.50
solve the system of equations. how many 10 oz. boxes were sold?
6
9
12
15