Evaluate the Function for the Indicated Values $f ( x ) = 2 \llbracket x + 6 \rrbracket + 8$

question 18

Multiple Choice

Evaluate the function for the indicated values.
$f ( x ) = 2 \llbracket x + 6 \rrbracket + 8$
(i) $f ( - 1 )$
(ii) $f ( - 2.3 )$
(iii) $f \left( \frac { 2 } { 3 } \right)$

• A) \(\begin{array} { l l l } \text { (i) } 19 & \text { (ii) } 14 & \text { (iii) } 20 \end{array}\)
• B) \(\begin{array} { l l l } \text { (i) } 18 & \text { (ii) } 16 & \text { (iii) } 20 \end{array}\)
• C) \(\begin{array} { l l l } \text { (i) } 19 & \text { (ii) } 14 & \text { (iii) } 22 \end{array}\)
• D) \(\begin{array} { l l l } \text { (i) } 18 & \text { (ii) } 16 & \text { (iii) } 22 \end{array}\)
• E) \(\begin{array} { l l l } \text { (i) } 18 & \text { (ii) } 14 & \text { (iii) } 20 \end{array}\)

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Definitions:

Internal Rate of Return

A financial metric used to evaluate the profitability of potential investments, calculating the discount rate that makes the net present value of all cash flows equal to zero.

Payback Period

Payback period is the duration required to recover the cost of an investment, calculated by dividing the initial investment by the annual cash inflow.

Net Present Value

A financial metric used to evaluate the profitability of an investment, calculated by subtracting the present value of cash outflows from the present value of cash inflows over a period of time.

Salvage Value

The determined residual amount of an asset at the cessation of its utility.