$1-$ What decision would you make if your company have sufficient funds for both of these project offers $($and also for a new project opportunity that could arise within $7$ years$)$ and if the discount rate should be at least $10\%?$ Why? $(30$p$)$

$\backslash$table$[[$Project $x,,,,,,,],[I,\frac{t+1}{\text{I}},\frac{t+2}{40},\frac{t+3}{-20},\frac{t+4}{-32},\frac{t+5}{-28},\frac{t+6}{120},\frac{t+7}{40}$