Value of two numbers if the sum is 12 and differnce is 4

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=

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

What are the solutions of the following system? y=-2x^2 y=x-2