14 POINTS for solving x in 14 Angle Relationships problems

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

Plz hurry evaluate the expression a+b where a=8 and b=19

Use the three steps to solve the problem. mrs. west is 14 years younger than her aunt. if mrs. west's age in years is as much below 60 as her aunt's age is over 40, how old is each? {aunt's age is a0, mrs. west's age is a1}