The linear programming model of the production mix problem only includes constraints of the less than or equal form

For income statement purposes, depreciation is a variable expense if the depreciation method used is

a. units-of-production b. straight-line c. sum of the years' digits d. declining balance

When an air conditioning unit has a higher energy efficiency ratio (EER), it means that:

A: The unit is less efficient; B: The unit is more efficient; C: The unit needs more watts of electricity; D: The BTUs are larger