I need tying answer not hand writing

Q3) The Highway Department expects the cost of maintenance for a piece of heavy construction equipment to be $5,000 in year 1, then increase to be $5,500 in year 2, and to increase annually by $500 through year 10. At interest rate of 10% per year determine the present worth of 10 years of maintenance costs. Q4) Ryan Borrowed $15,000 now with a 7% interest rate compounded annually. He needs to pay them back over 7 years starting from the end of the first year, what will be Ryan's annuity assuming that he will miss the 4th payment