3. Elise bought 5 boxes of cereal and 2 gallons of milk for a total cost of $31.24. Each box of cereal cost $4.80. Enter the cost, in dollars of 1 gallon of milk. Note: do not include the dollar sign, $, in your answer. *

3.62

Step-by-step explanation:

Let

x = cost of cereal

y = cost of milk

5x + 2y = 31.24

x = $4.80

Substitute into the equation

5x + 2y = 31.24

5(4.80) + 2y = 31.24

24 + 2y = 31.24

2y = 31.24 - 24

2y = 7.24

y = 7.24 / 2

y = $3.62

Therefore,

1 gallon of milk cost $3.62

207/8 is the right