13. amir and omar are tiling an area measuring a square meters. they lay down n tiles per square meter. omar can put down q tiles in r hours while it takes amir m minutes to lay one tile. a, n, q, r, and m are constants. (a) give the number of tiles amir and omar can put down as a function of t, the number of hours they work together. (b) how many square meters can they tile in t hours? (c) after h hours of working with omar, amir leaves. the job is not yet done. how many hours will it take omar to finish the job alone? express the answer in terms of any or all of the constants a, n, q, r, m, and h.

The average daily foreign exchange trading by banks around the world is closest to $ a. 1.5 trillion b. 1 trillion c. 600 billion d. 700 billion e. 1.3 trillion

What do you think: would it be more profitable to own 200 shares of penny’s pickles or 1 share of exxon? why do you think that?

Rate of return douglas keel, a financial analyst for orange industries, wishes to estimate the rate of return for two similar-risk investments, x and y. douglas's research indicates that the immediate past returns will serve as reasonable estimates of future returns. a year earlier, investment x had a market value of $27 comma 000; and investment y had a market value of $46 comma 000. during the year, investment x generated cash flow of $2 comma 025 and investment y generated cash flow of $ 6 comma 770. the current market values of investments x and y are $28 comma 582 and $46 comma 000, respectively. a. calculate the expected rate of return on investments x and y using the most recent year's data. b. assuming that the two investments are equally risky, which one should douglas recommend? why?