Solve the system by graphing.
x - 
y = 5
x + 
y = 12
A. (3, 4)
B. (3, 1)
C. (4, -3)
D. (4, 3)
Answer: D
Mathematics
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, where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 82 watches B. 41 watches C. 40 watches D. 46 watches
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A. $96 B. $126 C. $116 D. $106
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Rewrite the following fraction in two equivalent forms.
A. 
, - 
B. 
, - 
C. 
, 
D. 
, - 
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