Please Help Me with Q4!!

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

What is the value of x when x + 7 = 21?