If excel is used, please give equations, will rate!

Consider the financial data for a project in the following table. The annual revenue and annual expenses occur at the end of years 1 through 7 and the salvage value is recouped at the end of the 7 years. What is the i* for this project? If the annual expenses increased at an 8% rate each year compared to the previous year's expenses, but the annual revenue is unchanged, what is the new i*? Assume the annual revenue increases but remains constant for each of the 7 years. Assuming the annual expenses increase at the same rate as in part (b), what does the new annual revenue need to be in order to maintain the same i* as in part (a)? Use Excel to calculate IRR for both cash flows, and then use a guess-and-check method or "Goal Seek" to find the annual revenue