Determine whether or not the graph represents a function.
A. not a function
B. function
Answer: A
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Solve the problem.The rate at which an assembly line worker's efficiency E (expressed as a percent) changes with respect to time t is given by 
where t is the number of hours since the worker's shift began. Assuming that 
find E(t).
A. E(t) = 55t - 2t2 + 141 B. E(t) = 55t - 2t2 + 35 C. E(t) = 55t - 4t2 + 35 D. E(t) = 55t - 2t2 + 88
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?
Choose the most reasonable unit of measure.Area of a door: 20 
(in.2, ft2, yd2, mi2)
A. mi2 B. yd2 C. ft2 D. in.2
Provide an appropriate response.Consider the selection of officers for a club. Is this a combination, a permutation, or neither?
A. Permutation B. Neither C. Combination