Revenue, cost, and profit. The total cost and the total rev- enue (in dollars) for the production and sale of x hair dryers are given, respectively, by oo = 40x – 0.1x² 0 < x < 400 C(x) = 5x +2,340 and R(x) - (A) Find the value of x where the graph of R(x) has a hori- zontal tangent line. nt ouv (B) Find the profit function P(x). mis (C) Find the value of x where the graph of P(x) has a horizontal tangent line.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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### Revenue, Cost, and Profit

The total cost and the total revenue (in dollars) for the production and sale of \( x \) hair dryers are given, respectively, by:

\[ C(x) = 5x + 2,340 \]

\[ R(x) = 40x - 0.1x^2 \]

for \( 0 \leq x \leq 400 \).

#### Tasks:

(A) **Find the value of \( x \) where the graph of \( R(x) \) has a horizontal tangent line.**

(B) **Find the profit function \( P(x) \).**

(C) **Find the value of \( x \) where the graph of \( P(x) \) has a horizontal tangent line.**

(D) **Graph \( C(x) \), \( R(x) \), and \( P(x) \) on the same coordinate system for \( 0 \leq x \leq 400 \). Find the break-even points. Find the \( x \)-intercepts of the graph of \( P(x) \).**
Transcribed Image Text:### Revenue, Cost, and Profit The total cost and the total revenue (in dollars) for the production and sale of \( x \) hair dryers are given, respectively, by: \[ C(x) = 5x + 2,340 \] \[ R(x) = 40x - 0.1x^2 \] for \( 0 \leq x \leq 400 \). #### Tasks: (A) **Find the value of \( x \) where the graph of \( R(x) \) has a horizontal tangent line.** (B) **Find the profit function \( P(x) \).** (C) **Find the value of \( x \) where the graph of \( P(x) \) has a horizontal tangent line.** (D) **Graph \( C(x) \), \( R(x) \), and \( P(x) \) on the same coordinate system for \( 0 \leq x \leq 400 \). Find the break-even points. Find the \( x \)-intercepts of the graph of \( P(x) \).**
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