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Math Investigations - IV Sample Quiz Show all Work. Name:____________________________ 1. Find the next two terms in the sequence, then label each sequence as arithmetic, geometric, both or neither. a. 1 7 11 5 19 , , , , , ________, 4 12 12 4 12 ________ type of sequence: b. 1 1 2 4 8 , , , , , ________, 2 3 9 27 81 ________ type of sequence: c. 1 2 6 24 120 , , , , , ________, 2 3 5 7 11 ________ type of sequence: 2. Write a COMPLETE recursive definition for this sequence: 1, 3, 4, 7, 11, 18, 29, … 3. If the following sequence is harmonic, find the next three terms. 5 2, , ________, 2 ________, 0 1 n 4. Let A and define An A for each n. 1 1 a. Find A1 , A2 , and A3 . b. Find A9 c. Write a recursive formula for An