Practice 1a The ounces of cereal in a box can be represented by the equation y 120 8x where y is the ounces of cereal in the box and x is the number of days since purchase After 8 days how many ounces of cereal are left in the box 1b How many days will it be until the box is empty 1c After 5 days how many ounces of cereal have been eaten