For the quadratic function, tell whether the graph opens up or down and whether the graph is wider, narrower, or the same shape as the graph of 
f(x) = 3x2 - 5
A. Up; wider
B. Down; wider
C. Down; narrower
D. Up; narrower
Answer: D
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Solve.In 1980, the population of a city was 5.2 million. By 1992 the population had grown to 7.6 million. Find the rate at which the population of the city was growing.
A. 
million per year
B. 
million per year
C. 
million per year
D. 
million per year
The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Which of the following edges of the given network are not part of the minimum spanning tree?
A. BD B. CD C. AC D. BC E. none of these
Classify the real number as a natural number, whole number, integer, rational number and/or irrational number. The number may belong to more than one set.- 
A. rational number B. integer, rational number C. whole number, irrational number D. irrational number
Solve.x2 + 12x + 36 ? 0
A. {6} B. [6, ?) C. (-?, -6] ? [-6, ?) D. {-6}