3/1+3/4 i don’t get this i need some thx

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

Which is the graph of this function 3 square root of x plus one if

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)