Dogs R US uses the perpetual inventory system to account for its merchandise. A customer returned this merchandise due to a defect. Assuming that the purchase was originally bought on credit for $400 with a cost to Dogs R US of $100, and the defective, returned merchandise is only estimated to be worth $30, demonstrate the required journal entry to record the return and to write down the defective merchandise by selecting all of the correct actions below. a. Credit Cost of Goods Sold $100.
b. Debit Cost of Goods Sold $100.
c. Credit Merchandise Inventory $100.
d. Credit Cash $400.
e. Debit Merchandise Inventory $100.
f. Credit Sales Returns and Allowances $400.
g. Debit Accounts Payable $400.
h. Credit Accounts Receivable $400.
i. Debit Sales Returns and Allowances $400.

Jameson manages a well-known cell phone company. this company has been voted as having the best cell-phone service. consumers appreciate the fact that they can call from almost anywhere in the world and the service still gets through. jameson knows that the company's product far surpasses that of the competition. one thing has been bothering him, though. in order to put so many resources into ensuring the best service, jameson has cut back on employees at the firm's customer call center. recently, consumers have begun complaining about long wait times when they call in with a problem or concern. although its cell phone service is still considered one of the best, customer satisfaction with the firm's customer service has plummeted. jameson does not understand why consumers are getting so upset. he believes the exceptional cell phone service more than makes up for long waiting periods and other issues with its customer service. "after all," he says, "they can't have it all. if i invest more in customer service, that means less investment on ensuring the quality of our product offering."refer to scenario. jameson has asked you, a marketing consultant, to give him advice. he cannot understand how a cell-phone company with the best product offering in the cell-phone service industry could get such low satisfaction ratings simply because the customer service is not up to par. you suggest that jameson has a narrowly defined view of the company's product offering. you tell jameson that successful marketers should define their products as what they

Trecek corporation incurs research and development costs of $625,000 in 2017, 30 percent of which relate to development activities subsequent to ias 38 criteria having been met that indicate an intangible asset has been created. the newly developed product is brought to market in january 2018 and is expected to generate sales revenue for 10 years. assume that a u.s.–based company is issuing securities to foreign investors who require financial statements prepared in accordance with ifrs. thus, adjustments to convert from u.s. gaap to ifrs must be made. ignore income taxes. required: (a) prepare journal entries for research and development costs for the years ending december 31, 2017, and december 31, 2018, under (1) u.s. gaap and (2) ifrs. (c) prepare the entry(ies) that trecek would make on the december 31, 2017, and december 31, 2018, conversion worksheets to convert u.s. gaap balances to ifrs.

Describe three scenarios in which you might utilize mathematics to investigate a crime scene, accident scene, or to make decisions involving police practice. be sure to explain how math is used in police as they work through each scenario.