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7-48.

For parts (a) and (b), write a recursive equation using notation for each sequence. For parts (c) and (d), write an explicit equation using notation for each sequence. (For a reminder about sequence notation, see the Math Notes box in Lesson 5.3.2.)

Read Math Notes box in Lesson 5.3.3 on equations for sequences.

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    Is the sequence arithmetic or geometric?
    Remember to write an explicit equation.

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    Is the sequence arithmetic or geometric?
    Remember to write an explicit equation.