First we start by finding the two number we are making a ratio 24 ,42 and 18, after we find this we then simplify this like a fraction 24 ,42 and18 have 6 in common so we divide them by 6 (if you're learning raitos I would assume you already know how to simplify fractions), after that you get 4:7:3.
For part a,y < x y > -2xPoint B: (3,1) plugin x=3, y=1 y < x 1 < 3which is true, so point B satisfies the first inequalityYou can graph the inequality y > 2x+5 and see which schools are in the shaded region