Each customer participates in a minimum of zero and a maximum of many sales. 

Each sale involves a minimum of one and a maximum of many inventory items.

Each cash receipt (for example, one check from a customer) is deposited into one and only one account, and each account is associated with a minimum of zero cash receipts and a maximum of many cash receipts. These multiplicities reflect typical business practices.

These multiplicities depend on the nature of the business. Some businesses require payment at the time of the sale. Some allow payment terms. Some provide revolving accounts for their customers. Some collect payments in advance of the sale (for example, magazine subscriptions). So, there are no typical multiplicities for this association.