Given the Cost Function, C(x), and the Revenue Function, R(x)

question 48

Multiple Choice

Given the cost function, C(x) , and the revenue function, R(x) , find the number of units x that must be sold to break even.
-Three trains  one eastbound, one westbound, and one northbound  leave a city at the same time. The speed of the northbound train is 10 miles per hour greater than the speed of the eastbound train. After 2 hours, the
Distance between the westbound train and the eastbound train is 200 miles. Twice the speed of the westbound
Train is 100 miles per hour more than the speed of the northbound train. Find the speeds of the three trains.

• A) eastbound, 40 mph; westbound, 70 mph; northbound, 30 mph
• B) eastbound, 20 mph; westbound, 80 mph; northbound, 40 mph
• C) eastbound, 30 mph; westbound, 70 mph; northbound, 40 mph
• D) eastbound, 40 mph; westbound, 70 mph; northbound, 50 mph

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Definitions:

High Inflation

A condition characterized by a significant and sustained rise in the general level of prices for goods and services, eroding purchasing power.

Nominal Wages

The wages paid to employees measured in current money and not adjusted for inflation, reflecting the face value of earnings.

Labor Markets

Economic markets in which labor services are bought and sold, including the supply of labor by households and the demand for labor by firms.

Indexation

The automatic correction by law or contract of a dollar amount for the effects of inflation