The formula for the volume of a cone is given below. find the rate of change of the volume for each of the radii given below if dr/dt is 9 inches per minute and h = 24r.

v = (1/3)πr2h

a) r = 5 in

(b) r = 17 in

Iam so stuck. what is the worked out answer for this question?

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?