I need help on this too please I'm literally struggling

What is the base of 1/9 to the power of 2

What are the domain and range of the function f(x)=2^x+1

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=