While surfing the Internet, you find a site that claims to offer “the most popular and the cheapest DVDs anywhere.” Unfortunately, the website isn’t
clear about the how much they charge for each DVD, but it does give you the
following information:
Continue on the following page.
Number of DVDs Ordered 1 2 3
Total Cost (includes S&H) $15 $24 $33.
b. What is the slope of the line containing the data points?
c. What does the slope represent in this problem?
d. What is the y-intercept of the line that contains the data points?
Continue on the following page.
e. What does the y-intercept represent in the context of this problem?
f. Your friend says that he can get a dozen DVD’s from this website for $90.
Is he correct? Explain.
g. How much would it cost to order 50 DVD’s from this website?