muffins = 3.50beverage = 1.75total number of items = 32total cost = 87.50
m + b = 323.50m + 1.75b = 87.50
m = 32 - b
3.50(32-b) + 1.75b = 87.50112 - 3.50b + 1.75b = 87.50-3.50b + 1.75b = 87.50 - 112-1.75b = -24.50b = -24.50 / -1.75b = 14
m = 32 - bm = 18
The class bought 18 muffins and 14 beverages.
3.50m + 1.75b = 87.503.50(18) + 1.75(14) = 87.5063 + 24.50 = 87.5087.50 = 87.50
Hope this helped! (: