Grimwood trucking purchased a tractor trailer for $147,000. grimwood uses the units-of-activity method for depreciating its trucks and expects to drive the truck 1,000,000 miles over its 12-year useful life. salvage value is estimated to be $21,000. if the truck is driven 90,000 miles in its first year, how much depreciation expense should grimwood record?

Total marketing effort is a term used to describe the critical decision factors that affect demand: price, advertising, distribution, and product quality. define the variable x to represent total marketing effort. a typical model that is used to predict demand as a function of total marketing effort is based on the power function: d = axb suppose that a is a positive number. different model forms result from varying the constant b. sketch the graphs of this model for b = 0, b = 1, 0< b< 1, b< 0, and b> 1. (we encourage you to use excel to do this.) what does each model tell you about the relationship between demand and marketing effort? what assumptions are implied? are they reasonable? how would you go about selecting the appropriate model?