Number of Rooms The function
N(r) = −1.44r2 + 14.52r − 14.96
represents the number N of housing units (in millions) that have r rooms, where r is an integer and 2 ≤ r ≤ 9.
(a) Identify the dependent and independent variables.
(b) Evaluate N(3). Provide a verbal explanation of the meaning of N(3).
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