Can question 3 be solved by hand?

ar.edu.tr/pluginfile.php/181716/mod resource/content/1/10 Tutorial EngEcon 2019S.pdf QSayfaya sidir [D Sayfa gornm 700 Determine i fof this infinite cash-flow series. 3. Consider the financial data for a project given in table below Initial investment $90,000 Project Life 6 years Salvage value $10,000 Annual revenue $27,000 Annual expenses $8,000 a. What is i for this project? b. If the annual expense increases at a 7% rate over the previous year's expenses, but the annual income is unchanged, what is the new i? c. In part (b) at what annual rate will the annual income have to increase to maintain the same i obtained in part (a)? 4. You are considering an investment that costs $2,000. It is expected to have a useful life of three years. It is expected to have a useful life of three years. You are very confident about the revenues Spring 2019 E 2212 Engineering Economics a 10% rate of return on your investment ($2,000), what should be the minimum revenue in year 3? Year during the first two years but you are unsure about the revenue in year 3. If you hope to make at least Cash Flow