Help what do i do?i dont understand it

Select the lengths in centimeters that would form a right triangle

Which of the following contains a variable?

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