Although you may not think so, negative numbers are in the real world.
Have you ever seen a movie, where a person goes to a bar, gets a beer, and says "Put it on my tab"? Well his or her tab is a list of things that he or she owes the bartended for. Right at that moment, the person has a negative amount of money, meaning that he owes the bartender money.
Say each beer was $3.50, and he got a beer once a day for two weeks. What you would do is, multiply the price by seven (one for every day of the week) then multiply that by two (one for each week).
$3.50 x 7 = $24.50
Have you ever seen a movie, where a person goes to a bar, gets a beer, and says "Put it on my tab"? Well his or her tab is a list of things that he or she owes the bartended for. Right at that moment, the person has a negative amount of money, meaning that he owes the bartender money.
Say each beer was $3.50, and he got a beer once a day for two weeks. What you would do is, multiply the price by seven (one for every day of the week) then multiply that by two (one for each week).
$3.50 x 7 = $24.50
$24.50 x 2 = $49.00
This means that the person has negative 49 dollars. If he didn't want negative numbers, he