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Home > A2C > Chapter Ch3 > Lesson 3.2.3 > Problem 3-125

3-125.

Decide whether each sequence below is arithmetic, geometric, or neither. Then find equations to represent each sequence, if possible.

  1. Notice that the increase is not a constant number.

    The sequence is arithmetic.

  1. , , , …

    Notice the ratio.

  1. Notice that each number is a perfect square.

  1. Notice that the sequence's increase is constant.

    Remember what squared is.

    The sequence is geometric.