1. Tell whether each sequence is arithmetic, geometric, or Obj. 11-1, p. neither. Then supply the missing terms of the sequence. a. 2 , 3 9 1, 2 ' b. 5, 1, -3, -7, 2, 2 1 2 3 4 . 3' 5' 7' 9 ' 2 , 1 d. 1, 1.3, 1.6, 1.9, 2, 2 2. For the arithmetic sequence 36, 29, 22, 15, . . . , find Obj. 11-2, p. 507 (a) a formula for the nth term and (b) 19. 3. Insert (a) one and (b) two arithmetic means between -2 and 10. 4. For the geometric sequence 48, -24, 12, -6, . . . , find Obj. 11-3, p. 510 (a) a formula for the nth term and (b) 10. 5. Insert (a) one and (b) two geometric means between 2 and 16. 6. During a week-long sale, a store reduced its prices on sale items by 10% each day. A coat that was priced $80 on the first day of the sale was sold on the fourth day. At what price was the coat sold? Check your answers with those at the back of the book