Jam Delicious makes three kinds of jam: strawberry, raspberry and blueberry. Strawberry sells for $4.50 per jar, raspberry for $3.95 and blueberry for $4.75. Customers that purchase 2 jars or more of strawberry jam will receive a 10% off discount. Given a jam flavor and quantity a user enters, without using lookup or index functions, write a formula that will display the amount due. The formula should not display data if no data is entered