The radius r of a cone is increasing at a rate of 4in/min. the height h of the cone is always 4 times the radius. find the rate of change of the volume v when the radius is 7 inches. hint: v = 1/3 pi *r^2*h

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

5cakes cost 3.50 how much do 7 cakes cost