I dont understand how to rewrite 9 (x+12).

Combine like terms7y^2 + 7(6y^2 − 8)

How many days was the temperature above 90 degrees?

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.