Faro laser trackers are portable contact measurement systems that use laser technology to measure large parts and machinery to accuracies of $0\mathrm{.}0002$inches across a wide range of industrial applications. A customer that manufactures and installs cell phone relay dishes and satellite receiving stations reported the cash flows $($in $$1000$ units$)$ for one of its product lines. $($a$)$ Determine the number of possible rate of return values. $($b$)$ Find all rate of return values between $0$ and $150\%"$

n Net CF

$0-3000$

$11400$

$21700$

$33500$

$4-200$