Please show how you got the answers with formulas

Carlos needs a new roof for his house. He can pay cash, or pay by instailments. Payments would be $144.68 bi-weekly (at the end of every period) for 9 years. The interest rate is 7.500% compounded annually. a) This question deals with the value of an annuity b) There will be x payments. The payment period is c) The payment amount is $ d) The effective interest rate per period is e) The present/future value is $