• Page 449, exercise 7
• Page 475, exercise 6
• Page 497, exercise 1
• Page 497, exercise 3
• Page 497, exercise 4
• Page 500, exercise 2
• Page 501, exercise 1
• Page 501, exercise 2
• Page 502, exercise 1
• Page 502, exercise 1
• Page 502, exercise 2
• Page 503, exercise 4
• Page 503, exercise 5
• Page 504, exercise 2
• Page 505, exercise 3
