Pranav and Kristin are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping paper and rolls of holiday wrapping paper. Pranav sold 11 rolls of plain
wrapping paper and 13 rolls of holiday wrapping paper for a total of $122. Kristin sold 5 rolls of
plain wrapping paper and 14 rolls of holiday wrapping paper for a total of $104. What is the cost
each of one roll of plain wrapping paper and one roll of holiday wrapping paper?