Waste Industries is evaluating a $$70,000$ project with the following cash flows.

The coefficient of variation for the project is $0\mathrm{.}847.$

Use Appendix B for an approximate answer but calculate your final answer using the formula and financial calculator methods.

a$.$ Select the appropriate discount rate.

$6\%$

$8\%$

$10\%$

$14\%$

$20\%$

b$.$ Compute the net present value.

Note: Negative amount should be indicated by a minus sign. Do not round intermediate calculations and round your answer to