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 = 144,000. c11 represents the sales of System 2 at all stores in July.
B. c11 = 176,000. 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 = 154,000. c11 represents the total sales at Store 1 in July.

Answer: D

Mathematics

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Your lean body weight , in pounds, is the amount you would weight if all the fat in your body were to disappear. The following formula gives an estimate for lean body weight in young adult males:

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Here is total body weight in pounds and is abdominal circumference in inches.A: If a young adult male's abdominal circumference remains the same, but his total weight increases by 5 pounds, how is lean body weight affected?B: If a young adult male's total weight remains the same, but abdominal circumference increases by 3 inches, how is lean body weight affected?C: A young adult male has a lean body weight of 146.00 pounds. Over a period of time he gains 15 pounds and his abdominal circumference increases by 2 inches. What is his lean body weight now?

What will be an ideal response?