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March 30, 2017

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A multistoried building has a floor area of 2,000 square feet on the ground floor, 1,995 square feet on the 1st floor, 1,990 square feet on the 2nd floor, and so on. If the areas
of the higher floors follow this sequence, what is the expression to calculate the area of the nth floor?


An=(n-1)-5
An=2000-(n-1)
An=an-i-5
An=an-5
An=n-5

  • calculus - ,

    If we specify that the ground floor is floor 0,

    The area on the nth floor is clearly
    An = 2000 - 5n

    none of the given choices.

  • calculus - ,

    d i v i d e

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