Consider the following regression model:

Yi = 1 + 2 X2i + 3 X3i + ui

Where Yi = amount of rent (in dollars) per month for apartment dwellers

X2 = annual family income (in thousands of dollars)

X3 = community type (0 if urban renters; 1 if suburban renters)

The expectation is that families with high incomes would tend to rent more expensive apartments than families with low incomes, and that suburban housing would tend to be more expensive than urban (city) apartments.

A researcher collected survey data and discovered the following results from OLS: Yi = 300 + 100 X2i + 150 X3i + ui

Provide a substantive interpretation of all the coefficients (assume statistical significance for every one).