A woman buys a house for 5205,000 She pays $30,000 down and theces out a montgage at 6.3% on the halance. Find her inonthy pryment and the total amount of interest she will piry if the length of the mocigage is (a) 15 yoars, (b) 20 yours. (c) 25 years (d) When wil haf the 20 year loan be paid off