Demand for Sportsman 5 X 7 tents is provided by the given function where p is estimated in dollars and x is estimated in units of a thousand.
p = f(x) = -0.1x2 - x + 40
i) Determine average rate of change in unit price of the tent if quantity demanded is between the given intervals.
between 5200 and 5250 tents $ ________ per 1000 tents
between 5200 and 5210 tents $ ______ per 1000 tents
ii) Find rate of change of unit price if quantity demanded is 5200?