The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Using Kruskal's algorithm, which edge should we choose first?
A. BD
B. AE
C. AB
D. BF
E. none of these
Answer: A
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Use the partial sum formula to find the partial sum of the given arithmetic sequence.Find the sum of the first four terms of the arithmetic sequence: -7, -19, -31, . . . .
A. -57 B. -76 C. 100 D. - 100
Convert the given product to a single radical. Assume that all variables represent positive numbers.
? 
A. x
B. 
C. x
D. 
Solve the problem.The cost C of producing t units is given by C(t) = 4t2 + 8t, and the revenue R generated from selling t units is given by 
For what values of t will there be a profit?
A. There will be a profit when 0 units are sold. B. There will be a profit when more than 7 units are sold. C. There will be a profit when more than 8 units are sold D. There will be a profit when more than 9 units are sold.
Solve the radical equation, and check all proposed solutions.
- 6 = x
A. {-3} B. {2} C. {4} D. {-4}