Solve.
x + 1= 
x - 1
A. - 
B. - 1
C. - 
D. 
Answer: C
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Find a minimum spanning tree for the graph.
A. 
B. 
C. 
D. 
For the given function expressed verbally, give a symbolic representation.To convert x square yards to y square feet, multiply x by 9. Let y = f(x).
A. f(x) = 9x B. f(x) = 9 - x C. f(x) = 9/x D. f(x) = x/9
Solve the problem.The accompanying graph shows the average number of degrees above/below normal in December from 2000 - 2009 where x = 0 represents 2000. 
Construct a polynomial of minimum degree that models the graph.
A. y = - 
x(x - 2)(x - 6)(x - 9)
B. y = 
x(x - 2)(x - 6)(x - 9)
C. y = 
x(x + 2)(x + 6)(x + 9)
D. y = 
(x - 2)(x - 6)(x - 9)
Write the fraction as a decimal. If the decimal is a repeating decimal, write using the bar notation and then round to the nearest hundredth. 
A. 3.75
B. 3.
? 3.76
C. 3.
? 3.75
D. 3.7
? 3.76