Engineering Economics
Oligopoly exists when there is/are:

Few sellers and few buyers
One seller and few buyers
Many sellers and few buyers
Few sellers and many buyers

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Engineering Economics
The financial analysis:

All of these
Helps a share holder to compare the expected return on his investment in the firm against the expected return from other alternative investment
Helps a bank to know the financial position of the firm for granting a loan to the firm
Helps to judge the success of the firm's financial plans

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Engineering Economics
In a cash-flow diagram:

Time 0 is considered to be the present
A vertical arrow pointing up indicates a positive cash flow
Time 1 is considered to be the end of time period 1
All of these

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