Land use and population density data are given for several cities in the table on the following page. Estimate the percent imperviousness for each city using two methods:
(1) Imperviousness as a function of population density and
(2) Weighted imperviousness as a function of land use. Assume that undeveloped land is the same as "open" in Table 6.2, and "other" is 50% institutional and 50% open.