(3x+9y=78 2. John and Jen went to the farmers market to buy fruit. John bought 3 boxes of oranges and 9 boxes of cherries for $78. Jen bought 8 boxes of oranges and 4 boxes cherries for $58. The system of equations 8x+4y-58 can be used to represent this situation. a. Find how much does a box of oranges and a box of cherries cost? b. Their friend, Denice showed up late and wants to 2 boxes of oranges and 3 boxes of cherries. How much in total would she have to pay?