87.5 into fraction pls help I need this Monday

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

What is the volume of a cone with a height of 6 cm in the radius of 2 cm