3 more boxes of cereal than gallons of milk
x = number of boxes of cereal
cost per box of cereal: $2.79
Cost per gallon of milk: $4.49
y= 2.79x + 4.49 (x - 3)
So, to obtain the total cost, we have to multiply the cost of each box of cereal (2.79) by the number of boxes of cereal (x) and add the product of the cost of each gallon of milk (4.49) and the number of gallons of milk (x-3)
So:
The term x - 3 represents the number of gallons of milk. TRUE
The coefficient 2.79 represents the cost of one box of cereal. TRUE
The expression represents the total number of boxes of cereal and gallons of milk FALSE
The expression represents the total cost.