. A phone company offers a monthly cellular phone plan for $25. The plan includes 250 anytime minutes, and charges $0.20 per minute above 250 min. Write a piecewise-defined function for C(x), the cost for using x minutes in a month.

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.