The function f(n) = 100 * (0.25) ^ n represents the amount of a radioactive substance left after n hours. At what rate , in percent , is the amount of radioactive substance changing?

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=