An engineer uses this formula to determine the strength of a metal beam. 6.2(0.1x−3.1)−2.5(0.4−1.6x)Which expression is equivalent to the formula?

A
3.38x – 20.22

B
4.62x – 20.22

C
3.38x – 18.22

D
4.62x – 18.22

i need help plz tell me the right answer for y benchmark

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