Final answer:
The amount received as a cash down payment from the customer is $720. This transaction decreases the customer's receivable and increases the business's cash on hand.
Step-by-step explanation:
The amount received as cash down payment from a previously billed customer for payment of services is $720. This question pertains to accounting practices in the business field, where recording cash transactions is integral to maintaining accurate financial records. In the context provided, the customer has made a partial payment towards their outstanding balance, which reflects a transaction where cash is received and a receivable is reduced.
As for the information provided about Freda and Ben's real estate transactions, these illustrate concepts of investment, property value appreciation, and mortgage payments over time, but are not directly related to the initial question concerning the cash down payment.