Engineering Economics
Which is NOT an essential element of an ordinary annuity?

The payments are made at equal interval of time.
The first payment is made at the beginning of the first period.
Compound interest is paid on all amounts in the annuity.
The amounts of all payments are equal.

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Engineering Economics
The key to profitable operation for project cost control, is:

To keep the project cost equal to subsequent construction budget
None of these
To keep the project cost within the cost budget and knowing when and where job costs are deviating
To keep the project cost equal to original cost estimate

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Engineering Economics
In a cash-flow diagram:

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

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