Jean Clark is the manager of the Midtown Saveway Grocery Store. She now needs to replenish her supply of strawberries.

Her regular supplier can provide as many cases as she wants. However, because these strawberries already are very ripe, she will need

to sell them tomorrow and then discard any that remain unsold.

Jean estimates that she will be able to sell $10,11,12,$ or $13$ cases

tomorrow. She can purchase the strawberries for $$3$ per case an