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Home > CC4 > Chapter 7 > Lesson 7.2.2 > Problem 7-103

7-103.
  1. Examine each sequence below. State whether it is arithmetic, geometric, or neither. For the sequences that are arithmetic, write a formula for t(n). For the sequences that are geometric, determine the common ratio. Homework Help ✎

  2. a.

    1, 4, 7, 10, 13, …

    b.

    0, 5, 12, 21, 32, …

    c.

    2, 4, 8, 16, 32, …

    d.

    5, 12, 19, 26, …

    e.

    x, x + 1, x + 2, x + 3, …

    f.

    3, 12, 48, 192, …

The sequence is neither arithmetic nor geometric.

The sequence is geometric.

r = 2

Do the terms in the sequence increase by adding a constant amount or multiplying by a constant?

See part (d).

The sequence is arithmetic.

d = 1

See part (d).