How many like terms are in the expression?

14 x minus 14 y + 7 minus x + z + 2 x
0
2
3
5

Volume of a cylinder with a radius of 13 in and height of 30 in

The triangles are similar. what is the value of x? show your work.

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?