Matt and Molly and selling cheesecakes for a school fundraiser.
Customers can buy French silk cheesecakes and chocolate marble
cheesecakes. Matt sold 7 French silk cheesecakes and 14
chocolate marble cheesecakes for a total of $259. Molly sold 3
French silk cheesecakes and 5 chocolate marble cheesecakes for a
total of $97. What is the cost of one French silk cheesecake (x) and
one chocolate marble cheesecake (y)?