At the beginning of 2018, Angel Corporation began offering a two-year warranty on its products. The warranty program was expected to cost Angel 8% of net sales. Net sales made under warranty in 2018 were $207 million. Fifteen percent of the units sold were returned in 2018 and repaired or replaced at a cost of $5.10 million. The amount of warranty expense on Angel's 2018 income statement is:

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?