a) what is the present value of $13,000 received 14 years from today when the interest rate is 10% per year

b) jennifer wants to build a high quality computer that produces bitcoin and is maintenance free. however this procedure is quite slow. the computer takes 2 years to be built, it takes one year to manufacture $1100. these yearly cash flows will last forever. the machine will cost $3000 to build and the interest rate is 6% per year. what is the NPV of this business?

c) she convinced her engineer friend to improve the machine so that the income provided by machine increases by 3% every year, what is the new NPV?