Barry is trying to lose weight. The first month he loses 8 pounds. The second month he loses 7 pounds. The third month he gains 3 pounds. Which expression can be used to show the change in Barry’s weight in the 3 months?
-8. Then if he loses 7 pounds you are going to minus again -7. Afterwards when he gains 3 pounds it will be +3 you will put the addition sign because he gained weight. So the answer is -8-7+3
