Lorenzo bought 3 pounds of grapes at $2.50 per pound, a gallon of milk for $4.25, and 2 boxes of cereal that originally cost $4 each but were on sale for $1.50 off. He wrote an expression to determine the total weight.

Total = $49.05

Step-by-step explanation:

cost of grapes per pound = $ 2.50

she bought 3 pounds of grapes

so cost of 3 pounds of grapes = 3 * 2.50

= 7.5

gallon of milk = 8.6 pound

so cost of 8.6 pound of milk = 8.6 * 4.25

= $36.55

$ 1.50 off means = $4 - $ 1.50 = $2.5

cost of 2 boxes of cereal = 2 * 2.5

= $ 5

Total = 7.5 + 36.55 + 5

Total = $49.05