What is the square root of 2 as a fraction

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

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

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