$3.$ Given the project cash flows for two different projects each with a three$-$year investment life. Project $1$ cash flow is: $-$$$1,800,$ $$600,$ $$900,$ and $$1,700.$ Project $2$ cash flow is: $-$$$1,000,-$$$1,200,$ $$900,$ and $$3,500.$ Compute the net present worth of each project at i $=10\%.$