Suppose a woman has decided to retire as soon as she has saved $900,00. Her plan is to put $350 each month into an ordinary annuity that pays an annual interest rate of 3.9%. In how many years will she be able to retire?

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.)

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)