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

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
None of these
To keep the project cost equal to subsequent construction budget

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Engineering Economics
In a cash-flow diagram:

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

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