Macroeconomics 1st Edition by Dean Karlan,Jonathan Morduch

Exercise 19

Imagine you own a lawn-mowing business. Identify the main function of money exhibited in each situation below.
a. You swipe your debit card to purchase gasoline for your lawn mower.
b. You stuff your earnings from mowing lawns into a piggy bank.
c. You pay your friend Cornelius $5 to help you mow lawns.
d. You calculate your net earnings for the year on your tax return.
e. You determine how much value your new lawn mower has added to your business.