Rainy Day Umbrellas takes inventory quarterly. Beginning inventory for the year was $18,200. Inventory at the end of the first quarter was $15,400; at the end of the second quarter, $13,600; at the end of the third quarter, $17,500; and at the end of the year, $19,300. Compute the average inventory for Rainy Day Umbrellas.​

​White's Manufacturing, Inc. has contracted to sell certain goods to a company in the Netherlands. The price agreed upon for the goods is 94,000 Netherlands guilders. On the date the contract was signed, the Foreign Currency in dollars column in the financial section of the local paper showed that the Netherlands guilder was valued at 0.4184. Compute the U.S. currency value White's Manufacturing, Inc. expects to receive for the goods. (Round to the nearest whole dollar.)

Give three examples of values which have only two or three digits but nevertheless are known with perfect accuracy.

Perform the operation and write the result in standard form. $$(4+9i{)}^2$$

A) $16+81i$
B) $97-8i$
C) $-65+72i$
D) $-8+18i$
E) $16-9i$

The population of a region for 2000 is 19.5 (in millions) . The predicted population (in millions) for the region in the year 2020 is 24. Find the constants C (to one decimal place) and k (to four decimal places) to obtain the experimental growth model $y=C{e}^{kt}$ for the population. (Let $t=0$ correspond to the year 2000.)

A) $y=19.5e^{0.0045t}$
B) $y=7.2e^{1.2076t}$
C) $y=19.5e^{0.2076t}$
D) $y=19.5e^{0.0104t}$
E) $y=7.2e^{0.0604t}$