1. Consider the sequence: an = (-1)3n-1 a) Write out the first five terms of the sequence. b) Is this sequence arithmetic, geometric or neither? Explain. 2. Consider the sequence: a = 10 and an+1 = a +2 for n 1. a) Write out the first five terms of this sequence. b) Is this sequence arithmetic, geometric, or neither? Explain c) Find an explicit formula for an 24 8 16 3. For an explicit formula for the sequence: 1,- 13'17 Quiz 16 (Section 9.2, 9.4) Section 9.2: 1. Find the sum: k=1 - 2. Find the sum: 49 (3k - 5) k=0 3. Write as a fraction: 0.31 Section 9.4: 4. Use Pascal's Triangle to expand: (x - 2y)5 5. Find the coefficient of x in the expansion: (x + 1) 10