Express the mixed number as an improper fraction with no common factors in the numerator and denominator 5 and 1 fourth (i don't know how to do the fraction symbol on the computer)

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=