1) A company knows that the unit cost C and the unit revenue R from the production and sale of x units are related by +9747. Find the rate of change of unit revenue when the unit cost is changing by $14/ unit and the unit R2 C= 170,000 revenue is $4000. 2) A piece of land is shaped like a right triangle. Two people start at the right angle of the triangle at the same time and walk at the same speed along different legs of the triangle. If the area formed by the positions of the two people and their starting point (the right angle) is changing at 2 sq. meter per seconds, then how fast are the people moving when they are 5 meters from the right angle? (Round your answer to two decimal places.)