please explain with formulas and all working

3 A $5000 loan is to be amortised with 8 equal, semi-annual payments. If interest is at j2 = 9% p.a., determine the semi-annual payment and construct an amortisation schedule. 4 A loan of $900 is to be amortised with 6 equal monthly payments at /12 = 12% p.a. Determine the monthly payment and construct an amor- tisation schedule. 01.0% suns 8 m 5 A debt of $50 000 with interest at j4 = 8% p.a. Ois to be amortised by payments of $10000 at the end of each quarter for as long as necessary. Create an amortisation schedule. 6 A $10000 loan is to be repaid with semi- annual payments of $2500 for as long as be necessary. If interest is at j12 = 12%, create a his complete amortisation schedule