Solve for u. 2u-9= 25​

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

Witch represents the inverse of the function f(x)=1/4x-12

Which expression is equivalent to -5(3x - 6/7)