Agroup of mathematical symbols that express a relationship or that are used to solve a problem

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

Which expression is equivalent to sq-80

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?