i) Calculate the Simple Interest earned on an investment of $ 900,000 after 8 years at a rate of 2.5% per annum.

ii)Calculate the time needed on an investment of $800,000 to gained an interest of $28,800 if the interest rate is 3% per annum.

iii) 4 burgers and 2 drinks cost $42.00 3 burgers and 1 drink cost $29.00 What is the cost of each item?

a) 10 samples of different pastries are on display as customers leave a bakery, they are told that they can choose any 4 samples. How many different selections can a customer make?

b) The following day 5 drink samples are added and customers are told that they can take 4 pastries samples and 2 drink samples. How many different selections can the customer now make?