Answer:
A football player carried the ball 4 times in a game. Each time he carried the ball he got tackled 7 yards behind the line of scrimmage. How many yards did the player gain during the game ? 4(-7)=-28
I have a new credit card and the balance is zero. I go shopping in 4 stores and make 4 purchases. Each of the 4 purchases cost $7.00 and I pay for them with my new credit card. What is the balance on my credit card now after I am done shopping ? I owe the credit card company $28.00. My balance is now 4(-7)=-$28.00