For the missing term in the geometric sequence, find the possiblefor the missing term in the geometric sequence, find the possible values.
4, ? , 1/36

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?

Extra points! find the missing dimension! need asap

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red