I need help! I only need answer 11 and 12 . I was guessing to plug in the answers given to the equation but I don’t think it’s right

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 t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=