The following table lists the U.S. mobile advertising revenue in 2011 in millions of dol...

The following table lists the U.S. mobile advertising revenue in 2011 in millions of dollars for various companies.

(a) Using ordered pairs, write a function A that gives the revenue for each company in millions of dollars.

Interpret the first ordered pair.

(b) Repeat part (a) using a diagram.

(c) Identify the domain and range of A.