Computing Average Unit Costs

The total monthly operating costs of Chili To Go are:

$$8,000+$ $$0\mathrm{.}30$X

where

X $=$ servings of chili

$($a$)$ Determine the average cost per serving at each of the following monthly volumes: $100$; $1,000$; $5,000$; and $10,000.$

Round answers to one decimal place.

VolumeAverage Unit Cost $100$ Answer $11,000$ Answer $25,000$ Answer $310,000$ Answer $4$

$$

$($b$)$ Determine the monthly volume at which the average cost per serving is $$0\mathrm{.}70.$

Answer $5$ servings of chili