Section 1  

Num  Answer  Num  Answer  
2  only (a)  46  (4, 0)  
4  both (a) and (b)  50  (7, 5)  
14  dependent, infinite number 
52  (2, 4)  
16  consistent, one solution 
60  (6, 5)  
30  (2, 0)  66  (14, 11)  
40  (3, 1)  68  (1, 2)  
42  (1, 3)  72  (4, 3) 
Section 2  

Num  Answer  Num  Answer  
2  (3, 5, 4)  16  (1, 2, 3)  
8  (4, 1, 2)  18  (0, 0, 0)  
12  (2, 0, 3)  20  (4, 6, 8) 
Section 3  

Num  Answer  Num  Answer  
6  12 ft 38 ft 
26  a = 5 b = 7 

8  salary $500 commission 4% 
34  car 50 mph truck 40 mph 

12  17.3 lb @ %5.20 12.7 lb @ $6.30 
36  2, 4, 6  
14  $2500 @ 8% $5500 @ 10% 
38  a = 1 b = 4 c = 3 

20  130 adults 42 children 