$4\mathrm{.}43$ Use the PW method at $8\%$ per year to select up to $3$ projects from the $4$ available ones if no more than $$20,000$can be invested. Estimated lives and annual net cash flows vary.

$\backslash$table$[[$Project$,\backslash$table$[[$Initial$],[$Investment$,$ $$]],$Net Cash Flow, $ per Year$],[1,2,3,4,5,6],[$w$,-5,000,1000,1700,1800,2,500,2,000,],[$X$,-8,000,900,950,1000,1,050,10,500,],[$Y$,-8,000,4000,3000,1000,500,500,2000],[$Z$,-10,000,0,0,0,17,000,,]]$