Chapter 0.7, Problem 55E

APPLICATIONS

Average cost A company’s average cost per unit when x units are produced is defined to be

$\text{Average}\text{cost}=\frac{\text{Total}\text{cost}}{x}$

Use this equation in Problems 55 and 56.

Suppose a company’s average costs are given by

$\text{Average}\text{cost}=\frac{\text{4000}}{x}+55+0.1x$

Express the average-cost formula as a single fraction.

Write the expression that gives the company’s total costs.