Molly read 75 pages of the latest thriller mystery novel in 45 minutes. What was her unit rate? If she continues to read at this rate, how long will it take her to read the entire 425-page novel?

Unit rate = 75 pages/45 minutes = 1 1/3 pages/minute

Time to read 425 pages = Total number of pages/Unit rate = 425/1 1/3 =255 minutes = 4 hours and 15 minutes.