The demand for a product for the last six years has been 15, 15, 17, 18, 20, and 19. the manager wants to predict the demand for this time series using the following simple linear trend equation: trt = 12 + 2t. what are the forecast errors for the 5th and 6th years?
0, −3
0, +3
+2, +5
−2, −5
−1, −4

A4-year project has an annual operating cash flow of $59,000. at the beginning of the project, $5,000 in net working capital was required, which will be recovered at the end of the project. the firm also spent $23,900 on equipment to start the project. this equipment will have a book value of $5,260 at the end of the project, but can be sold for $6,120. the tax rate is 35 percent. what is the year 4 cash flow?

Your dormitory, griffingate, has appointed you central banker of its economy, which deals in the currency of wizcoins. assume that the velocity of wizcoins in griffingate is constant at 10,000 transactions per year. right now, real gdp is 1,000 wizcoins, and there are 2,000 wizcoins in existence.

Experienced problem solvers always consider both the value and units of their answer to a problem. why?