Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Question
![The quantity demanded each month of the Walter Serkin recording of Beethoven's Moonlight Sonata, produced by Phonola
Media, is related to the price per compact disc. The equation
p = -0.00041x + 6
(0 < x < 12,000)
where
denotes the unit price in dollars and x 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
C(x) = 600 + 2x
- 0.00004x2
(0 < x < 20,000).
Hint: The revenue is R(x) = px, and the profit is P(x) = R(x) – C(x).
Find the revenue function, R(x) = px.
R(x) = -0.00041x2 + 6x
Find the profit function, P(x) = R(x) – C(x).
P(x) = -0.00037x² + 4x – 600
Find the derivative of the profit function, P(x).
P'(x) = -0.00074x + 4
%3D
Find the critical number of the function P(x). (Round your answer to the nearest whole number.)
X =
To maximize its profits, how many copies should Phonola produce each month? (Round your answer to the nearest whole
number.)
discs/month](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9c11cb4e-496c-49a9-b15b-3a14af31a568%2F038c2dab-cf37-4fc6-9af2-1047fdf66370%2Fxl6ygh_processed.png&w=3840&q=75)
Transcribed Image Text:The quantity demanded each month of the Walter Serkin recording of Beethoven's Moonlight Sonata, produced by Phonola
Media, is related to the price per compact disc. The equation
p = -0.00041x + 6
(0 < x < 12,000)
where
denotes the unit price in dollars and x 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
C(x) = 600 + 2x
- 0.00004x2
(0 < x < 20,000).
Hint: The revenue is R(x) = px, and the profit is P(x) = R(x) – C(x).
Find the revenue function, R(x) = px.
R(x) = -0.00041x2 + 6x
Find the profit function, P(x) = R(x) – C(x).
P(x) = -0.00037x² + 4x – 600
Find the derivative of the profit function, P(x).
P'(x) = -0.00074x + 4
%3D
Find the critical number of the function P(x). (Round your answer to the nearest whole number.)
X =
To maximize its profits, how many copies should Phonola produce each month? (Round your answer to the nearest whole
number.)
discs/month
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