What is a equation that equals 9 using pemdas

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (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

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)