B) Write a function that expresses f(x).

The function that expresses length f(x) feet, in terms of area x square feet can be written as:

f(x) = sqrt(x)

So, when x = 100 square feet, f(x) = 10 feet,

when x = 121 square feet, f(x) = 11 feet,

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when x = 8100 square feet, f(x) = 90 feet

Step-by-step explanation:

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step-by-step explanation:

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