Chapter 9: Problem 76
A manufacturing company has determined that the daily revenue, \(R\), in thousands of dollars depends on the number, \(n\), of palettes of product sold according to the formula \(R=12 n-0.6 n 2 .\) Determine the number of palettes that must be sold in order to maintain revenues at \(\$ 60,000\) per day.
Short Answer
Expert verified
The company must sell 10 palettes to meet the revenue target of $60,000.
Step by step solution
01
Understand the equation
The revenue equation given is \( R = 12n - 0.6n^2 \). Here, \( R \) represents the revenue in thousands of dollars, and \( n \) is the number of palettes sold.
02
Set up the equation
To find the number of palettes needed to reach \( \$60,000 \), first convert the target revenue from dollars to thousands of dollars: \( 60,000 \) dollars is \( 60 \) thousand dollars. So, set up the equation: \( 12n - 0.6n^2 = 60 \).
03
Rearrange into a standard form
Rearrange the equation into a standard quadratic equation form: \( -0.6n^2 + 12n - 60 = 0 \).
04
Simplify the equation
To simplify, multiply the entire equation by \( -10 \) to avoid decimals: \( 6n^2 - 120n + 600 = 0 \).
05
Use the quadratic formula
The quadratic formula is \( n = \frac{{-b \pm \sqrt{{b^2 - 4ac}}}}{{2a}} \). Identify \( a = 6 \), \( b = -120 \), and \( c = 600 \). Substitute into the formula: \( n = \frac{{120 \pm \sqrt{{(-120)^2 - 4 \times 6 \times 600}}}}{{2 \times 6}} \).
06
Calculate the discriminant
Calculate the discriminant: \( (-120)^2 - 4 \times 6 \times 600 = 14400 - 14400 = 0 \). The discriminant is 0, indicating one solution.
07
Solve for n
Since the discriminant is 0, use the quadratic formula to find: \( n = \frac{{120}}{{12}} = 10 \).
08
Interpret the result
The solution \( n = 10 \) means the company must sell 10 palettes of product for a daily revenue of \( \$60,000 \).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Revenue Calculation
Understanding how a company's revenue depends on the number of items sold is essential in business operations. Revenue calculation allows a business to predict earnings based on sales figures. In our scenario, the company uses a mathematical equation to represent this relationship:
- Given is the formula: \( R = 12n - 0.6n^2 \), where \( R \) is the revenue in thousands of dollars, and \( n \) is the number of palettes sold.
Quadratic Formula
The quadratic formula is a robust tool for solving quadratic equations, which are equations in the form \( ax^2 + bx + c = 0 \). This formula provides solutions for \( x \) based on the coefficients \( a \), \( b \), and \( c \). The quadratic formula is depicted as:
- \( n = \frac{{-b \pm \sqrt{{b^2 - 4ac}}}}{{2a}} \)
Discriminant
The discriminant is a component of the quadratic formula under the square root symbol, noted as \( b^2 - 4ac \). It tells us about the nature and number of solutions a quadratic equation has:
- If the discriminant is positive, there are two distinct real solutions.
- If it is zero, there is exactly one real solution (it is a perfect square).
- If negative, no real solutions exist, only complex numbers.