DISCOUNTED CASH FLOW CASE $20$ POINTS. SHOW YOUR WORK AND CALCUALTIONS

Spending $$40,000$ on a new truck would increase delivery revenues by $$18,000$ annually over the truck's $4-$year life. Graph the relationship between NPV and the discount rate for this project. $($Hint: Assume for simplicity that the relationship is linear and find two points on the line's graph.$)$ Is this project acceptable at a discount rate of $16\%?$ What is the highest discount rate at which this project is acceptable?

$\backslash$table$[[$Year$,0,1,2,3,4],[$Cash flows,$-$$$40,000,+$$$18,000,+$$$18,000,+$$$18,000,+$$$18,000$