Figure 21-16 
-Refer to Figure 21-16. The price of X is $20, the price of Y is $5, and the consumer's income is $40. Which point represents the consumer's optimal choice?
Definitions:
Overdraft Fees
Charges applied by financial institutions when spending exceeds the amount available in a checking account.
Service Charge Income
Revenue earned by banks or businesses for providing specific services to their clients or customers.
Money Supply
The aggregate sum of funds within an economy, encompassing cash, coins, and the amounts contained in checking and savings accounts.
Deposits On Reserve
Funds that banks must hold in reserve and not lend out, as required by central banking regulations.
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