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Math (Algebra/Pre-Algebra)

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What is the 23rd term in the arithmetic sequence: 11, 14, 17, 20...?

All I need is the formula to find the it because I have to show work. Thanks.

  • Math (Algebra/Pre-Algebra) -

    if a is the first term
    and d is the common difference
    then Term(n) = a + (n-1)d

  • Math (Algebra/Pre-Algebra) -

    thanks =]

  • Math (Algebra/Pre-Algebra) -

    so a = 11 and d = 3, so 23 = 11 + (23-1) 3.
    The 23rd term is 77 because 11 + 22(3) = 77 =]

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