Written in simplest terms its 4/21
Answer: y=2.608x^2-115.264x+1568.064
Step-by-step explanation:
520 pages. 390 divided by 3 is 130. Take that times 4 and you get 520. To check it, I took 520 divided by four (or you can multiply by 1/4) and got 130. Hope it helps!