Solve the problem.A spherical water tank with an inner radius of 10 m has its lowest point 1 m above the ground. It is filled by a pipe that feeds the tank at its lowest point (see figure). Neglecting the volume of the inflow pipe, how much work is required to fill the tank if it is initially empty? Express the answer in terms of ?. 
A. 
? J
B. 
? J
C. 
? J
D. 
? J
Answer: A
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Find the acute angle A. Leave answer in decimal degrees rounded to seven decimal places, if necessary.tan A = 0.58338072
A. 210.258463° B. 329.741537° C. 30.2584629° D. 59.7415371°
Use the figure below to answer the following question(s).
The degree of vertex F is
A. 5. B. 2. C. 3. D. 4. E. none of these
What do we call the action plan that is designed to help a company achieve its vision?
A. contingency plan B. forecast C. strategy D. mission
Solve the problem.A computer manufacturer has three outlet stores that sell its four computer systems. The following table shows the numbers of systems sold by the three stores in July.
The prices of the systems are: $1200 for System 1, $1500 for System 2, $1600 for System 3, and $1800 for System 4. Write the information from the table as a 4 x 3 matrix B. Write a row matrix A for which the entries represent the prices for the systems. If 
find c12. What does this entry of C represent?
A. c12 = 144,000. c12 represents the sales of System 2 at all stores in July. B. c12 = 176,000. c12 represents the total sales at Store 2 in July. C. c12 = 154,000. c12 represents the total sales at Store 1 in July. D. c12 = 164,000. c12 represents the total sales at Store 3 in July.