Please show all your work to receive full credit.

You could write the financial calculator input keys or include an Excel file.

$1.$ An investment produces a cash flow of $$300$ in year $1,$ $$450$ in year $2,$ and $$550$ in year $3.$ If the expected market rate for similar investments is $15\%,$ what is the investment$$s total present value? If the investment costs $$1,000,$ it is worth buying?