To find: The function that models area of a rectangular building in terms of its width whose length is three times its width.
The function is modeled as .
The formula to calculate area of rectangle is,
The width of rectangular building is w.
Model the function in single variable , express the length in terms of width.
Length is three times its width, express it algebraically.
Summarize all the information in a table as shown below,
|In Words||In Algebra|
Model the function from information in above table.
Thus, the function is modeled as .
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