Each of Professor A and Professor B at UTD has a private secretary, who can type four letters per hour. The letters are generated at a rate of three per hour by each of the two professors, who have been wondering if they would benefit from pooling the two secretaries. Perform a queuing analysis. What is the average waiting time of a letter in the system.

Any point on a country's production possibilities frontier represents a combination of two goods that an economy:

Last year, johnson mills had annual revenue of $37,800, cost of goods sold of $23,200, and administrative expenses of $6,300. the firm paid $700 in dividends and had a tax rate of 35 percent. the firm added $2,810 to retained earnings. the firm had no long-term debt. what was the depreciation expense?

Frost corporation incurred the following transactions during its first year of operations. (assume all transactions involve cash.) 1) acquired $1,900 of capital from the owners. 2) purchased $435 of direct raw materials. 3) used $290 of these direct raw materials in the production process. 4) paid production workers $490 cash. 5) paid $290 for manufacturing overhead (applied and actual overhead are the same). 6) started and completed 250 units of inventory. 7) sold 140 units at a price of $6 each. 8) paid $130 for selling and administrative expenses. the amount of raw material inventory on the balance sheet at the end of the accounting period would be: