3. case study: read the article, "improving efficiency in a forest pest control spray program" uploaded above and answer the following questions in no more than two pages. a. what is the problem addressed in this paper? b. what is the objective, the decision variables, and the types of constraints in the model. briefly describe. c. if you were to use a modeling language, which would have been the sets and the associated attributes (model parameters and variables)? d. using as guide the "operations research modeling approach" of chapter 2 of the textbook, describe in a few sentences the phases or steps of the modeling approach performed in this particular or project. elaborate on the validation of the model and its use in conducting 'what if' analyses. e. were there any other modeling approaches considered for this project before the linear programming approach was adopted? f. to estimate the model parameters, data were collected or derived. which data were collected by the project investigators, which were derived and which were supplied by which sources? g. if the # of aircraft teams were 5, the # of spray blocks was 500 and the # of airfields were 10, what would have been the size of the model (# of variables and # of constraints). assume that aircraft teams can be stationed at all airfields, can spray all types of insecticides and their operating range is large enough to reach any block from any airport.

Bridgeport company began operations at the beginning of 2018. the following information pertains to this company. 1. pretax financial income for 2018 is $115,000. 2. the tax rate enacted for 2018 and future years is 40%. 3. differences between the 2018 income statement and tax return are listed below: (a) warranty expense accrued for financial reporting purposes amounts to $7,500. warranty deductions per the tax return amount to $2,200. (b) gross profit on construction contracts using the percentage-of-completion method per books amounts to $94,700. gross profit on construction contracts for tax purposes amounts to $67,100. (c) depreciation of property, plant, and equipment for financial reporting purposes amounts to $61,800. depreciation of these assets amounts to $75,700 for the tax return. (d) a $3,600 fine paid for violation of pollution laws was deducted in computing pretax financial income. (e) interest revenue recognized on an investment in tax-exempt municipal bonds amounts to $1,500. 4. taxable income is expected for the next few years. (assume (a) is short-term in nature; assume (b) and (c) are long-term in nature.) (a) prepare the reconciliation schedule for 2017 and future years. (b) prepare the journal entry to record income tax expense for 2017. (c) prepare the income tax expense section of the income statement beginning with “income before income taxes.” (d) determine how the deferred taxes will appear on the balance sheet at the end of 2017.

Below are the steps in the measurement process of external transactions. arrange them from first (1) to last (6). event step post transactions to the general ledger. assess whether the transaction results in a debit or credit to account balances. use source documents to identify accounts affected by an external transaction. analyze the impact of the transaction on the accounting equation. prepare a trial balance. record the transaction in a journal using debits and credits.

You are bearish on telecom and decide to sell short 100 shares at the current market price of $50 per share. a. how much in cash or securities must you put into your brokerage account if the broker’s initial margin requirement is 50% of the value of the short position? b. how high can the price of the stock go before you get a margin call if the maintenance margin is 30% of the value of the short position? (input the amount as a positive value. round your answer to 2 decimal places.)