In order to join an online tutoring group, there is a $40 startup fee and a $5 monthly fee. After how
months would it have cost $90? Write an equation

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?

If 3x+8=3x+8 is it one solution or no solution

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2