Which is not proportional? a. y=2x b. y=x - 2 c. y=-2x d. y=1/2x

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

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

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)