Candy works on the 30th floor of an office building. She took the elevator to the cafeteria on the 7th floor. How many floors did she travel?

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

Can someone me with this problem . show your work .

Find the solution of this system of equation -7x+y=-20 9x-3y=36