straight$-$line method.$)$ Cash outflows, if any, should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to the nearest dollar. a$.$ What is the Year$-0$ net cash flow? $\backslash$$ b$.$ What are the net operating cash flows in Years $1,2,$ and $3?$ Year $1$:$\backslash$$ Year $2$:$\backslash$$ Year $3$:$\backslash$$ c$.$ What is the additional Year$-3$ cash flow $($i$.$e$,$ the after$-$tax salvage and the return of working capital$)?\backslash$$ d$.$ If the project's cost of capital is $\backslash (10\backslash \%\backslash ),$ what is the NPV of the project? $\backslash$$ Should the machine be purchased?