Select the length of the missing side of triangle b

1.5

4.5

5

6

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