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March 27, 2017

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Find the first four terms of the sequence represented by the expression.

3n + 5
A.5, 8, 11, 14
B.8, 11, 14, 17
C.3, 6, 9, 12
D.0, 8, 11, 14
I think it is C...?

  • Algebra - ,

    starting with n=1,
    cannot be (C)
    Try (B)
    3(1)+5=8, and terms increase by 3

  • Algebra - ,

    1-th term ( n = 1 ) :

    3 n + 5 = 3 * 1 + 5 = 3 + 5 = 8


    2-th term ( n = 2 ) :

    3 n + 5 = 3 * 2 + 5 = 6 + 5 = 11


    3-th term ( n = 3 ) :

    3 n + 5 = 3 * 3 + 5 = 9 + 5 = 14


    4-th term ( n = 4 ) :

    3 n + 5 = 3 * 4 + 5 = 12 + 5 = 17


    8 , 11 , 14 , 17

    Answer B

  • Algebra - ,

    Thank you both...I understand now

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