1.Prove the difference of cubes identity. is trinomial factor in the difference of cubes identity a perfect sqaure trinomial

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

The radius of a sphere is 3 inches. which represents the volume of the sphere?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?