The Following Table Shows the Numbers of U

question 33

Multiple Choice

The following table shows the numbers of U.S. cellular subscriberships (in millions) from 1985 to 2002. ​ Source: The CTIA Semi-Annual Wireless Industry Survey
Assume that the number of U.S. cellular subscriberships, in millions, can be modeled by the function , where t is the number of years past 1980. Find the function that models the instantaneous rate of change of the U.S. cellular subscriberships.
​

---

Definitions:

Donee Beneficiary

A third party who benefits from a contract in which a promisee promises to perform certain actions that benefit this third party.

Acquired Rights

are rights that employees gain as a result of working for their employer over a period, often concerning job security and benefits.

Intended Third-party Beneficiary

A person or entity not party to a contract but whom parties to the contract intend to benefit directly through the contract’s performance.

Proving

The process of establishing the truth or validity of something through evidence or argument.