288 times 66 =?
Plz help

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

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4