What is the value of x?

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

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i