Determine whether quantities vary directly or inversely and find the constant of variation. A teacher grades 25 students essays in 4 hours. Assuming he grades at the same speed, how long will it take him to grade 35 essays?
IDK the constant and quantities... First, find how many hours it takes for him to grade 1 essay, 0.16. Then multiply that by 35 to get 5.6. I hope this is right -_-'
