BuyFind

Single Variable Calculus: Concepts...

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

Single Variable Calculus: Concepts...

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

Solutions

Chapter 1, Problem 22RE

(a)

To determine

To express: The cost as a function of the number of toaster ovens produced.

Expert Solution

Answer to Problem 22RE

Solution:

The cost function in terms of the number of toaster ovens produced is y=6x+3000.

Explanation of Solution

Given:

To produce 1000 toaster ovens in a week it costs $9000 and to produce 1500 it costs $12000.

The cost function follows a liner function.

Calculation:

Let the cost function as, yy1=m(xx1). (1)

The slope of the line m is given by m=yy1xx1.

According to the given data, there exist two points (1000,9000) and (1500,12000).

The slope of line passes through (1000,9000) and (1500,12000) is,

m=12000900015001000=6

Substitute m=6 in equation (1).

yy1=6(xx1)

Substitute (x,y)=(1000,9000) in yy1=6(xx1),

y9000=6(x1000)y9000=6x6000y=6x6000+9000y=6x+3000

Therefore, the cost function is, y=6x+3000.

Use online graphing calculator and obtain the graph of function y=6x+3000 as shown in Figure1.

Single Variable Calculus: Concepts and Contexts, Enhanced Edition, Chapter 1, Problem 22RE

(b)

To determine

To find: The slope of graph and explain what it represent.

Expert Solution

Explanation of Solution

From part (a), the slope of the line is, m=6 it represents the rate of change of cost with respect the number of production of toaster.

(c)

To determine

To find: The y-intercept of graph and explain what it represent.

Expert Solution

Explanation of Solution

From part (a), the equation is, y=6x+3000.

Notice that the y-intercept is $3000. It represents the fixed cost even there is no production.

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