Help me I don’t get it :(

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

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

Which function has the domain x> -11