In economics, the most economical quantity Q of goods (TVs, dress, gallons of paint, etc.) for a store to order is given by Wilson's lot size formula , where K is the cost of placing the order, M is the number of items sold per week, and h is the weekly holding costs for each item (the cost of storage space, utilities, taxes, security, etc.). Calculate 

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A. ?
B.
C. ?
D. ?
E. ?

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Answer: B

Mathematics

Express the rational number as a terminating or repeating decimal number.

A. 0. 
B. 0. 
C. 0. 
D. 0. 

Solve the problem.A large city is planning to upgrade its existing downtown water distribution system. Water will be fed into the area at the point represented by the vertex labeled A in the graph below. Water must be piped to each of 5 main distribution points, represented by the vertices B through F in the graph. City engineers have estimated the cost of laying the pipes to carry the water between each pair of points in millions of dollars, as indicated on the graph. They must now select which pipes should be laid, so that there is exactly one route for the water to be pumped from A to any one of the five distribution points (possibly via another distribution point), and they want to achieve this at minimum cost. Use Kruskal's algorithm to determine which pipes they should lay. Find

the total cost of laying the pipes you select.

What will be an ideal response?

Find the average value of the function f over the given region.f(x, y) = sin (x + y); R = 

A. ?²
B.
C.
D. 4?²

Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = -x2 - 4x - 7

A. maximum at (- 2, - 3) B. maximum at (3, 2) C. minimum at (0, 2) D. minimum at (3, 0)