The graphs of a company's total revenue function 
and total cost function 
are shown. The cost function is a linear function of the number of units sold. From the sale of the 51st item, 501st item, and 801st item, rank from smallest to largest the amount of profit received.
?
?
A. 801st, 51st, 501st
B. 501st, 801st, 51st
C. 801st, 501st, 51st
D. 51st, 801st, 501st
E. 51st, 501st, 801st
Answer: D
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (8, 1, -1) for ln 
- exy+z2 = 0.
A. 
B. 
C. 
D. 
Solve.The following table lists the number of students enrolled in ABC High School for a four year period. 
What was the enrollment in 2011?
A. 414 B. 405 C. 407 D. 386
Determine the number of spanning trees in the graph.
A. 2 B. 16 C. 17 D. 9
Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
Consider the following timeline using three processors.
A. This timeline is an illegal schedule because task E was started before task C was completed. B. This timeline is an optimal schedule for three processors. C. This timeline is an illegal schedule because task F was started before task E was completed. D. This timeline is not an optimal schedule because the project can be scheduled with a finishing time of 11 hours. E. none of these