As the number of securities in a portfolio is increased, what happens to the average portfolio standard deviation? a) It decreases at an increasing rate. b)It increases at an increasing rate. c) It first decreases rapidly, then starts to decrease slowly as more securities are added. d) It decreases at a constent rate e) It increases at a decreasing rate.

Amachine purchased three years ago for $720,000 has a current book value using straight-line depreciation of $400,000: its operating expenses are $60,000 per year. a replacement machine would cost $480,000, have a useful life of nine years, and would require $26,000 per year in operating expenses. it has an expected salvage value of $130,000 after nine years. the current disposal value of the old machine is $170,000: if it is kept 9 more years, its residual value would be $20,000. calculate the total costs in keeping the old machine and purchase a new machine. should the old machine be replaced?

The card shoppe needs to maintain 21 percent of its sales in net working capital. currently, the store is considering a four-year project that will increase sales from its current level of $349,000 to $408,000 the first year and to $414,000 a year for the following three years of the project. what amount should be included in the project analysis for net working capital in year 4 of the project?

Ineed this asap miguel's boss asks him to distribute information to the entire staff about a mandatory meeting. in 1–2 sentences, describe what miguel should do.