1. **Problem Statement:** Identify the relative change in each scenario when combining two quantities. 2. **Scenario (a):** You spend 12 and then are paid 0. - Spending 12 means your money decreases by 12. - Being paid 0 means no change. - Total change: $-12 + 0 = -12$. - Since the total change is negative, you have less money than you started with. 3. **Scenario (b):** A bird flies up 40 feet and then down 40 feet. - Flying up 40 feet means an increase of 40. - Flying down 40 feet means a decrease of 40. - Total change: $+40 + (-40) = 0$. - The bird is at its initial height. 4. **Scenario (c):** A boxer loses 3 pounds and then gains 3 pounds. - Losing 3 pounds means a decrease of 3. - Gaining 3 pounds means an increase of 3. - Total change: $-3 + 3 = 0$. - The boxer is 0 pounds from her starting weight. **Final answers:** - (a) You have less money than you started with. - (b) The bird is at its initial height. - (c) The boxer is 0 pounds from her starting weight.