Explain, why the graph of the total cost function is always above the x-axis and, can never move downward as you go from left to right. a) Because the total cost includes the cost of all previously made items and it increases when more items are made. b) Because the total cost includes the cost of all previously made items and it decreases when more items are made. c) Because the total cost includes fixed cost and it increases when more items are made. d) Because the total cost includes variable cost and it increases when more items are made.   Is the same thing true of the graph of the average cost function? a) It is true because the average cost can increase as more items are made. b)It is true because the average cost can decrease as more items are made. c) It is not true because the average cost can decrease as more items are made. d) It is not true because the average cost can increase as more items are made.

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Explain, why the graph of the total cost function is always above the x-axis and, can never move downward as you go from left to right.

a) Because the total cost includes the cost of all previously made items and it increases when more items are made.

b) Because the total cost includes the cost of all previously made items and it decreases when more items are made.

c) Because the total cost includes fixed cost and it increases when more items are made.

d) Because the total cost includes variable cost and it increases when more items are made.

 

Is the same thing true of the graph of the average cost function?

a) It is true because the average cost can increase as more items are made.

b)It is true because the average cost can decrease as more items are made.

c) It is not true because the average cost can decrease as more items are made.

d) It is not true because the average cost can increase as more items are made.

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