Engineering Economics
Aside from many sellers and many buyers, which one is a characteristic of perfect competition?

Perfect information and absence of all economic friction
All of these
Free market entry and exit
Homogeneous product

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Engineering Economics
Each financial ratio is generally compared by

All of these
A ratio developed by using the projected financial statement of the firm
A past ratio calculated from the past financial standard of the firm
A ratio of some selected firms most progressive and successful at the point of consideration

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Engineering Economics
In a cash-flow diagram:

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

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