Ashley and Kristin are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper. Ashley sold 4 rolls of plain wrapping paper and 3 rolls of shiny wrapping paper for a total of $68. Kristin sold 9 rolls of plain wrapping paper and 2 rolls of shiny wrapping paper for a total of $77. What is the cost each of one roll of plain wrapping paper and one roll of shiny wrapping paper? SHOW ALL WORK