ANSWERS A-3 26. U A B ROC China Switzerland U.S. Norway Germany Japan Sweden Canada Italy Austria C Netherlands 71. U A 2.5% 0.5% 1% 5% 31% 15% 42% 3% Rh B 72. U A B 6% 1% 2% 3% 34% 9% 38% 7% Rh 73. a) U A: construction projects B: plumbing projects III I V II IV VI VII VIII C: budget greater than $300,000 74. U C H Pure C Hydro- Pure H carbons Carbohydrates Oxo- Oxocarbons hydrogens Do not contain Pure O C, H, or O O 76. = + + nABC nAnB nC ( ) ( ) ( ) ( ) < < − n A B C 2 ( ) > > − ′ n A B C ( ) > > − ′ n A B C ( ) > > − ′ n A B C ( ) > > 77. a) A B U D C IV V VI III II I VII VIII IX XIII X XI XII XIV XV XVI b) Region Set Region Set I ′ ′ ′ A B C D > > > IX ′ ′ A B C D > > > II ′ ′ A B C D > > > X ′ A B C D > > > III ′ ′ ′ A B C D > > > XI ′ ′ A B C D > > > IV ′ ′ A B C D > > > XII ′A B C D > > > V ′ A B C D > > > XIII ′ ′ ′ A B C D > > > VI ′ ′ A B C D > > > XIV ′ ′ A B C D > > > VII ′ A B C D > > > XV ′ ′ ′ A B C D > > > VIII A B C D > > > XVI ′ ′ ′ ′ A B C D > > > SECTION 2.5, PAGE 83 1. U 97 80 58 15 Cafeteria Library 2. U 33 FTF Online 41 29 27 3. U 12 Finished basement Three-car garage 35 17 13 4. U 47 Marathon 55 38 10 Triathlon 5. U Instagram 2 Facebook 11 8 22 23 16 14 12 Snapchat 6. U 7 3 2 5 2 4 4 6 Professional sports team Children’s museum Symphony
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