Help please Pretty plz

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

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base