Solve the linear inequality. Other than ?, use interval notation to express the solution set and graph the solution set on a number line.18x + 18 > 3(5x + 10)
A. (16, ?)
B. (-?, 4)
C. [4, ?)
D. (4, ?)
Answer: D
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Solve the problem.The owners of a large factory complex plan to install a new network of water lines to supply water to five factory buildings. The building numbers of the buildings involved are: #12, #14, #15, #17, and #18. The distances in meters between these buildings are given in the following table.
a) Represent this information with a weighted, complete graph.b) Use Kruskal's algorithm to find a minimum-cost spanning tree that would link each building to give the least-expensive pipe network.c) If the water line cost is $700 per meter, determine the cost of the network in part (b).
What will be an ideal response?
Solve the problem.The table lists how financial aid income cutoffs (in dollars) for a family of four have changed over time. Use the midpoint formula to approximate the financial aid cutoff for 1985. 
A. $36,000 B. $21,000 C. $57,000 D. $18,000
Write the quotient in the form a + bi.
A. 
+ 
i
B. 
- 
i
C. - 
+ 
i
D. - 
- 
i
?Use the integration to find the general solution of the differential equation 
.
?
A. ?
B. ?
C. ?
D. ?
E. ?