A company establishes a $400 petty cash fund on September 4 to pay for minor cash expenditures. The fund is replenished at the end of each month. At the end of September, the fund contains $313 in cash. The company has also issued a credit card and authorized its office manager to make purchases. Expenditures for the month include the following items:

Office party decorations (petty cash) $87
Lawn maintenance (credit card) 117
Postage (credit card) 72
Fuel for deliveries (credit card) 82

Record the establishment of the petty cash fund on September 4, all expenditures made during the month, and the replenishment of the petty cash fund on September 30.

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?