The quantity demanded each month of the Walter Serkin recording of Beethoven's Moonlight Sonata, manufactured by Phonola Record Industries, is related to the price/compact disc.
?
The equation 
, where 
denotes the unit price in dollars and 
is the number of discs demanded, relates the demand to the price.
?
The total monthly cost (in dollars) for pressing and packaging x copies of this classical recording is given by 
.
?
To maximize its profits, how many copies should Phonola produce each month? Hint: The revenue is 
, and the profit is 
.
?
A. 
copies
B. 
copies
C. 
copies
D. 
copies
E. 
copies
Answer: A
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Write the percent as a decimal.46.6%
A. 0.0466 B. 0.466 C. 46.6 D. 4.66
Use a graphing utility to find or approximate solutions to the equation. If necessary, round your answers to three decimal places.x2 - 6x - 57 = 0
A. 31.605, -25.605 B. 25.605, -31.605 C. 5.124, -11.124 D. 11.124, -5.124
Convert the degree measure to radians, correct to four decimal places. Use 3.1416 for ?.50.97°
A. 0.8896 B. 0.9896 C. 0.6896 D. 0.7896
Perform the indicated operations and simplify.
A. 
B. 
C. 
D. 
E. 