Engineering Economics
What is defined as the certificate of indebtedness of corporation usually for a period not less than 10 years and guaranteed by a mortgage on certain assets of a corporation?

T-bills
Stock
Bond
Promissory note

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Engineering Economics
In a cash-flow diagram:

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
Time 0 is considered to be the present

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