Identify the terms, like terms, coefficients, and constants in each expression. 20. n + 4n - 7n - 1
21. -3d + 8 - d - 2
22. 5x + 4 + 9x
23. 2 + 3d + d
24. -3r + 7 - 3r - 12
PLS HELP 31 POINTS AND PLS DON'T GIVE WRONG ANSWERS PL HELP!!!

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?

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?

What is the value of p in the equation y^ = -4x?