.) SFHS band is doing a fundraiser for new musical
equipment. They are selling small boxes of chocolates and
a dozen cookies. On the first week, Mr. Kwon's first period
sold 3 boxes of chocolates and 12 dozen cookies for a total
of $600. In the second week, his first period sold 6 boxes
of chocolates and 4 dozen cookies for a total of 300. Write
the system of linear equations below.
-help please-