Exam 1: Functions and Change

Values of a linear cost function are given in the following table. Find a formula for the cost function.

The following table gives values of three functions. Which one(s) could possibly be exponential? Select all that apply.

A $2000 pump depreciates linearly. It is worth $1200 in 4 years. How many years will it be before the pump is worth nothing?

What interest rate, compounded annually, is equivalent to a 9% rate compounded continuously? Round to two decimal places.