Question in picture.

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

One positive number is 9 more than twice another. if their product is 95, find the numbers

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?