7. A square is altered so that one dimension is increased by 5 inches and the
other dimension is decreased by 2 inches. If the area of the resulting
rectangle is 98 square inches, find the area of the original square.

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

He concluded that a heavier object dropped from the same height as a lighter object will land

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?