Many manufacturing processes are composed of two or more simple processes in the same way that a complicated function is often composed of two or more simpler functions. The ideas discussed in this module are often used by manufacturers. The following question illustrates these ideas. Suppose a manufacturer is making weights from lead. These two processes can be described by two functions.
Time is measured in minutess and mass in kilograms.
Describe what the manufacturer must do to produce a finished weight whose mass is one kilogram with a permissible error of 2 grams.