Pippin went to a game room that charged $4 admission, plus $0.25 per token. The equation which represents his total cost is y = 0.25x +4. What are the ordered pairs for the equation when you use these x-values: 5, 10, 20?
(5,8), (10, 10), (20, 15)
(5,5.50), (10, 8.50), (20, 13)
(5, 5.25), (10, 6.50), (20,9)
(5,5), (10,8), (20,15)

There is no

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.