How many variable terms are in the expression 3x3y + 5xz − 4y + x − z + 9?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

How many square centimeters of wrapping paper will be used to wrap the shoe box?