M<2=1\2 120= I need help for this

Which expression is equivalent to 2x^2+7x+4?

What is the range for 31,39,29,34,37,24,36,33,34,28

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