# The meaning of f ( 20 ) = 10 , 000 and f ′ ( 20 ) = − 350 .

### Single Variable Calculus: Concepts...

4th Edition
James Stewart
Publisher: Cengage Learning
ISBN: 9781337687805

### Single Variable Calculus: Concepts...

4th Edition
James Stewart
Publisher: Cengage Learning
ISBN: 9781337687805

#### Solutions

Chapter 3.2, Problem 50E

(a)

To determine

## To describe: The meaning of f(20)=10,000 and f′(20)=−350.

Expert Solution

### Explanation of Solution

The value f(20)=10,000 means that if the selling price is 20 dollars per yard, then 10,000 yards will be sold.

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