The length of an office is x feet and the width is x+3 feet.Write the polynomial that represents the area. Find the area if x=12

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chrissy,

In the case of a rectangular office, area is defined as length times width. So, in this case,

A(x) = x * (x+3) = x^2 + 3x is the polynomial that represents the area of the office.

If x = 12, then A(12) = 12 ^2 + 3*12 = 144 + 36 = 180 square feet.

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