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 C = AB, find c11 . What does this entry of C represent?
A. c11 = 176,000. c11 represents the total sales at Store 1 in July.
B. c11 = 154,000. c11 represents the total sales at Store 1 in July.
C. c11 = 164,000. c11 represents the total sales at Store 3 in July.
D. c11 = 144,000. c11 represents the sales of System 2 at all stores in July.
Answer: B
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A. Euler's method gives y ? 9.2983; the exact solution is 12.9315 B. Euler's method gives y ? 8.2740; the exact solution is 11.1513 C. Euler's method gives y ? 8.9605; the exact solution is 12.3212 D. Euler's method gives y ? 9.4866; the exact solution is 13.3004
Find the exact value of the product.cos 
cos 
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B. 
C. 
D. 
Solve the problem.Find parametric equations for the normal line to the surface 
at the point 
A. 
B. 
C. 
D. 
A farmer wants to partition a rectangular feed storage area in a corner of his barn. The barn walls form two sides of the stall, and the farmer has 30 feet of partition for the remaining two sides.
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a = 30
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What dimensions will maximize the area of the partition?
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Please enter your answer as two numbers without the units, separated by a comma.
What will be an ideal response?