The table below shows Gabriel's earnings on the job. Time Earnings (dollars)
9 $314.10
18 $628.20
20 $698
How much does he make in 18.5 hours?

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.)

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?