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March 26, 2017

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Find the 11th term of the arithmetic sequence 7, 4.4, 1.8, -0.8, …
A. -33
B. -19
C. 33
D. 19

B

  • algebra - ,

    not B, I mean A. -33

  • algebra - ,

    you were right the first time

    a = 7
    d = -2.6

    term(11) = a+ 10d
    = 7 + 10(-2.6)
    = 7- 26 = -19

    which is B)

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