please answer with proper formula and calculation, those i write here may be not corret

1) What lump sum must be paid at the end of 4 years if RM8,000 is borrowed from a bank at a 12% annual interest rate compounded a) Annually b) Semi Annually c) Quarterly d) Monthly USe formule ( F=P(1+i)N e) Daily f) Hourly 2) On December 31,2016 , there will be RM10,000 available from the settlement of an estate. What sum of money does that represent on December 31, 2011 at the annual interest rate of 12% compounded annually? formulaP=(1+i)NF 3) A granite company is planning to buy a fully automated granite cutting machine. If it is purchased under down payment, the cost of the machine is RM16,00,000. If it is purchased under instalment basis, the company has to pay 25% of the cost at the time of purchase and the remaining amount in 10 annual equal instalments of RM2,00,000 each. Suggest the best alternative for the company using the present worth basis at i=18%, compounded annually. formula 4) A finance company advertises two investment plans. In PLAN 1 , the company pays RM12,000 after 15 years for every RM1,000 invested now. In PLAN 2, for every RM1,000 invested, the company pays RM 4,000 at the end of the 10 th year and RM4,000 at the end of 15th year. Select the best investment plan from the investor's point of view at i=12%, compounded annually. 5) Tanjung Investment Sdn.Bhd. accepts RM10,000 at the end of every year for 20 years and pays the investor RM8,00,000 at the end of the 20th year. Mawar Investment Sdn.Bhd accepts RM10,000 at the end of every year for 20 years and pays the investor RM15,00,000 at the end of the 25th year. Which is the best investment alternative? Use Present Worth base with i= 12%. (6) Consider the following sets of investment projects, all of which have a 3-vears investment life: i. Compute the Net Present Worth (NPW) of each project at i=15%. ii. Which project or projects are acceptable if the projects are independent and mutually exclusive