The empire state building in new york city is 1,250 feet tall. it has 103 floors. rounded to the nearest whole, what is the height of each floor? (3 points)

1250 / 103 = 12 ft <== (and thats rounded to the nearest whole number)

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.