Engineering Economics
In a cash flow series:

All of these
The gradient in the cash flow may be positive or negative
Either an increase or decrease in the amount of a cash flow is called the gradient
Uniform gradient signifies that an income or disbursement changes by the same amount in each interest period

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Engineering Economics
A construction estimate is used

To produce a statement of the approximate cost
None of these
To decide an approximation of the value of the project and not the exact cost
To judge tentatively or approximate value of the project

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