BuyFind

Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071
BuyFind

Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

Solutions

Chapter 2, Problem 70RE
To determine

To find: The maximum profit and number of units sold to generate it.

Expert Solution

Answer to Problem 70RE

The maximum profit is equal to 88500 and number of units sold to generate it is equal to 15000 .

Explanation of Solution

Given information:

The profit P (in dollars) generated by selling x units of a certain commodity is given by P(x)=1500+12x0.0004x2 .

Calculation:

Graph the profit function P(x)=1500+12x0.0004x2 .

To graph a function y=1500+12x0.0004x2 , follow the steps using graphing calculator.

First press “ON” button on graphical calculator, press Y= key and enter right hand side of the equation y=1500+12x0.0004x2 after the symbol Y1 . Enter the keystrokes ()1500+12X0.0004X^2 .

The display will show the equation,

  Y1=1500+12X0.0004X^2

Press the window key and adjust the window to [20000,20000] to [10,100000] .

Now, press the GRAPH key and TRACE key to produce the graph of given function in standard window as shown in Figure (1).

  Precalculus: Mathematics for Calculus - 6th Edition, Chapter 2, Problem 70RE

Figure (1)

The maximum value of the profit function is 88500 at x=15000 .

Therefore, the maximum profit is equal to 88500 and number of units sold to generate it is equal to 15000 .

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