I need help can you guys help me

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

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1