Graphing and functions questions
John makes DVDs of his friend’s shows. He has realized that, because of his fixed costs, his average cost per DVD depends on the number of DVDs he produces. The cost of producing x DVDs is given by

John wants to figure out how much to charge his friend for the DVDs without making a profit. How much should he charge for 100 DVDs in order to break even? What is the cost per DVD?

Suppose John makes more than 100 DVDs for his friend. complete the table below showing his costs at different levels of production.

Graph the function C(x) from 0 ≤ x ≤ 3000 .

What happens to the cost per DVD? Why do you think this happens?
BONUS: Write a function D(x), that can be used to find the cost per DVD for any value of x. Refer to the diagram of f(x) shown below for questions 45
# of DVDs 
0 
10 
100 
1,000 
10,000 
100,000 
1,000,000 
Total Cost 

Cost per DVD 

What is the domain and range of f(x)? Write your answer in interval notation.

Sketch the graph of each of the following. Describe the transformation in each graph:
a. g(x)=f(x)1
b. h(x) = f(x)
c. p(x)=f(x+2)
d. q(x)=f(x+2)1
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