Thomas's goal is to study 14 hours each week. This week, he studied 1.5 hours on Monday and 2.0 hours on Wednesday. Thomas uses the equation x−3.5=14 to find the number of hours, x, left for him to study to achieve his goal. Is he correct? Why or why not?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min