The answer is B:40 hours. You take 200 divided by 20 to get 10 (the amount of 20 page sections he needs to read) and then multiply 10 by 4 (the speed he reads).
25d^2-30d-35d+42=25d^2-65d+42.
Answer:
The answer is X>6
if you click the image it will show the steps to solving the inequality. hope this helps.