What three factors determine the demand for a product?

Four key marketing decision variables are price (p), advertising (a), transportation (t), and product quality (q). consumer demand (d) is influenced by these variables. the simplest model for describing demand in terms of these variables is: d = k – pp + aa + tt + qq where k, p, a, t, and q are constants. discuss the assumptions of this model. specifically, how does each variable affect demand? how do the variables influence each other? what limitations might this model have? how can it be improved?

Warren company plans to depreciate a new building using the double declining-balance depreciation method. the building cost $870,000. the estimated residual value of the building is $57,000 and it has an expected useful life of 20 years. assuming the first year's depreciation expense was recorded properly, what would be the amount of depreciation expense for the second year?

George retired from a local law firm and then volunteered to oversee a nonprofit's legal records. george is performing the duties of a: