Susan borrowed $19 from her brother. She paid him back $3 the next day. She will then give him $4/week to pay off the debt. How many weeks will it take to pay?
Let w represent the number of weeks. Cali is paying off $4/week and has already paid $3. The total she will pay is 4w + 3. She owes a total of $19. 4w + 3 = 19
