The following functions represent the total benefit (TB) and total cost (TC) of a water resources project as a function of capacity, Q: 0.7 1, 000, 000TB Q= 2 5000TC Q= where TB and TC are expressed in dollars, present worth. Determine the optimal capacity (Q*) of the project graphically and analytically. (Hint: The optimal capacity is the level that maximizes Total Net Benefit = Total Benefit - Total Cost.