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: .