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The "What's in Store" Age

Trivia exists everywhere and about eveything. For example, did you know that there are 2.2 billion square feet of self-storage space in the United States?

Plus, the first billion square feet of storage space was built over a 25-year period (1973-1998), while the second billion was built over an 8-year period (1998-2005).

Question 1: Is the amount of current self-storage space greater than equal to, or less than the area of Seattle? Explain.

Question 2: When would one expect there will be 3 billion square feet of self-storage space? Explain...did you use a linear or exponential model?

Question 3: Assuming it continues to increase at its current pace, when would one expect the amount of self-storage space to equal or exceed the area of the State of Washington?

Source: New York Times, March 8, 2007, D1