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.
b. b(1) = 2,b(n) = 2•b(n − 1) – 1 for n greater than or equal to 2.
C. c(1) = 3,c(n) = 10 .c(n − 1) for n greater than or equal to 2.
d. d(1) = 1, d(n) = n• d(n – 1) for n greater than or equal to 2.