C. 160, 80, 40, 20 2. Write the first five terms of each sequence. Determine whether each sequence is
arithmetic, geometric, or neither.
a. a(1) = 7, a(n) = a(n − 1) – 3 for n > 2.2.4.3
b. b(1) = 2, b(n) = 2 · b(n − 1) - 1 for n > 2.
C. c(1) = 3, c(n) = 10 c(n - 1) for n > 2.
d. d(1) = 1, d(n) = n. d(n − 1) for n 2 2.