## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$m+2.21=n$
Looking at the table it can be seen that there is pattern where the non-machinable charge is 2.21 greater than the machinable charge for items of the same weight. This is written in equation form as $m+2.21=n$ where m is the machinable charge and n is the non-machinable charge.