Does this graph represent a function? Why or why not?

A. Yes, because it has two straight lines.

B. No, because it fails the vertical line test.

C. No, because it is not a curve,

D. Yes, because it passes the vertical line test.

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?

B. jan surveyed her friends to find their favorite season. she recorded jhi ii for summer. how many people chose summer as their favorite season?

15 pizzas are cut into 1/8 slices. how many slices of pizza are there?