Martha is going to the doctor for a series of appointments. Her total cost over the course of the visits will be equal to $140 for the treatment plus $20 per appointment a. If her total bill is $220 how many appointments did she have? Please use variables when answering the question.

You download a video game to your computer. you have a 60-minute free trial of the game. it takes 5 1/6 minutes to set up the game 7 1/3 minutes to play each level. you want to find out how many levels you can play for free.which inequality describes the number of levels, l, you can play in 60 minutes? can you play 6 levels during your free trial? i need ,

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out