Net present value of an energy-efficient motor. two 100-hp electric motors are being considered—call them "good" and "premium." the good motor draws 79 kw and costs $2400; the premium motor draws 77.5 kw and costs $2900. the motors run 1600 hours per year with electricity cost- ing $0.08/kwh. over a 20-year life, find the net present value of the cheaper alternative when a discount rate of 10% is assumed.

Anewspaper boy is trying to perfect his business in order to maximize the money he can save for a new car. daily paper sales are normally distributed, with a mean of 100 and standard deviation of 10. he sells papers for $0.50 and pays $0.30 for them. unsold papers are trashed with no salvage value. how many papers should he order each day and what % of the time will he experience a stockout? are there any drawbacks to the order size proposed and how could the boy address such issues?

On june 1 of the current year, chad wilson established a business to manage rental property. he completed the following transactions during june: opened a business bank account with a deposit of $28,000 from personal funds. purchased office supplies on account, $2,690. received cash from fees earned for managing rental property, $7,390. paid rent on office and equipment for the month, $3,310. paid creditors on account, $1,230. billed customers for fees earned for managing rental property, $6,130. paid automobile expenses (including rental charges) for the month, $740, and miscellaneous expenses, $370. paid office salaries, $2,330. determined that the cost of supplies on hand was $1,590; therefore, the cost of supplies used was $1,100. withdrew cash for personal use, $2,210. required: 1. indicate the effect of each transaction and the balances after each transaction: for those boxes in which no entry is required, leave the box blank. for those boxes in which you must enter subtractive or negative numbers use a minus sign. (example: -300) answer

Starting at age 30, you deposit $2000 a year into an ira account for retirement. treat the yearly deposits into the account as a continuous income stream. if money in the account earns 7%, compounded continuously, how much will be in the account 35 years later, when you retire at age 65? how much of the final amount is interest?