Suppose the price of a ticket to a Lenny Kravitz concert is $41 and at that price, the quantity of tickets demanded is 17,000 per concert. Using the midpoint method of calculating percentage changes, if Mr. Kravitz raises the price to $48 and the quantity demanded decreases to 16,000, the price elasticity of demand for his concert tickets is:.

A. 1.00.

B. 15.73.

C. 0.93.

D. 6.06.

E. 0.39.

Historically, 12 percent of a mail-order firm's repeat charge-account customers have an incorrect current address in the firm's computer database. the number of customers out of 19 who have an incorrect address in the database is a binomial random variable with n = 19 and 2formula36.mml = 0.12.

The following cost data pertain to the operations of montgomery department stores, inc., for the month of july. corporate legal office salaries $ 75,300apparel department cost of sales"evendale store $ 97,200corporate headquarters building lease $ 50,300store manager's salary"evendale store $ 12,900apparel department sales commission"evendale store $ 11,550store utilities"evendale store $ 12,800apparel department manager's salary"evendale store $ 10,450central warehouse lease cost $ 18,600janitorial costs"evendale store $ 11,800 the evendale store is just one of many stores owned and operated by the company. the apparel department is one of many departments at the evendale store. the central warehouse serves all of the company's stores. required: 1. what is the total amount of the costs listed above that are direct costs of the apparel department? 2. what is the total amount of the costs listed above that are direct costs of the evendale store? 3. what is the total amount of the apparel department's direct costs that are also variable costs with respect to total departmental sales?

When a company produces and sells x thousand units per week, its total weekly profit is p thousand dollars, where upper p equals startfraction 800 x over 100 plus x squared endfraction . the production level at t weeks from the present is x equals 4 plus 2 t. find the marginal profit, startfraction dp over dx endfraction and the time rate of change of profit, startfraction dp over dt endfraction . how fast (with respect of time) are profits changing when tequals8?