Which of the following cost nine dollars?

Time that is not obligated toward some compulsory and time-consuming activity. This defines: 

You see an advertisement for Hardee’s breakfast in the morning. This is an example of: 

The mere exposure effect is _________ and may ____________ for a product. 

By default, ORDER BY sorts in:

Life expectancy is __________ in many, but not all, countries.

Which of the following best describes a database?

What is the average click through rate for a display ad?

A composite key is:

Which product shape is most appealing to customers?