What is the answer Simple answers please

Ineed if you could explain and give me the answer you! this needs done

What is the difference between the predicted value and the actual value

James is playing his favorite game at the arcade. after playing the game 33 times, he has 88 tokens remaining. he initially had 2020 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