Show work please details

C Inc. booked $110,000 in net income and interest expenses of $10,000 over the past year, facing a tax rate of 11%. If C Inc. instead financed entirely with equity, what would its net income be?

If you had $2000 in a simple interest account paying an interest rate of 7% per period, how many periods would it take for the account balance to double?

ET has a total of $100,000 in long-term notes payable on the books, accruing interest at a rate of 11%. If the tax rate is 22%, how big of a tax shield does ET have?

Consider the cash flow stream given by x=(20,10,5). If an individual is infinitely patient, how much would they would value this cash flow stream in present dollars? (round to the nearest dollar)