Porter Plumbing's stock had a required return of 10.50% last year, when the risk-free rate was 5.50% and the market risk premium was 4.75%. Then an increase in investor risk aversion caused the market risk premium to rise by 2%. The risk-free rate and the firm's beta remain unchanged. What is the company's new required rate of return? (Hint: First calculate the beta, then find the required return.) Select the correct answer. a. 12.61% b. 11.71% c. 12.01% d. 12.31% e. 12.91%

University car wash built a deluxe car wash across the street from campus. the new machines cost $219,000 including installation. the company estimates that the equipment will have a residual value of $19,500. university car wash also estimates it will use the machine for six years or about 12,500 total hours. actual use per year was as follows: year hours used 1 3,100 2 1,100 3 1,200 4 2,800 5 2,600 6 1,200 prepare a depreciation schedule for six years using the following methods: 1. straight-line. 2. double-declining-balance. 3. activity-based.

Define the marginal rate of substitution between two goods (x and y). if a consumer’s preferences are given by u(x, y) = x3/4y1/4, compute the consumer’s marginal rate of substitution as a function of x and y. calculate the mrs if the consumer has chosen to consumer 48 units of x and 16 units of y. show your work. (use the back of the page if necessary.

David burdick is the ceo of acme bubblegum, a successful public company. as one of the cofounders of the company, burdick has enjoyed speaking and writing about the success of acme bubblegum for several years. typically, he speaks at conferences or directly to the press, but recently, he has been blogging about his firm anonymously. specifically, he defended a recent advertising campaign that was unpopular among consumers and pointedly attacked one of acme bubblegum’s competitors. burdick deeply enjoys his anonymous blogging and believes that none of his readers actually know that he works for acme bubblegum. should burdick be allowed to praise his company’s performance anonymously online? should he be allowed to attack his competitors without disclosing his relationship with the company? how would you feel if the ceo of a company at which you shopped was secretly writing criticisms of his or her competition? how would you feel if you knew a writer for your favorite blog was actually closely involved in a company that the blog discussed? 1. define the ethical issue? 2. who are the primary stakeholders? 3. what are the possible alternatives? 4. how could you evaluate the ethical implications of the alternative actions (use appropriate decision rules)? 5. what action would you recommend and why?