Hi can you help me with my back to uni work, thank you!

a} Explain the meaning of interest being compounded. b} How much more money would you accrue if you invested 25 for 2 years in an account which paid a nominal annual rate of 2.5% compounded quarterly compared to the same account but with the interest compounded annually? c) What role does the number g have in the compounding of interest? . A nite geometric series can be written as: S: e+er+er2 +... +er\"'1 a} Dene the symbols 8: a, rand n. allr") b} Show that: S = lr I invest 25 at the end of each year for a 5__ye_a[ period into an account that pays 5.6% interest annually on the investment. a} Show how my investment can be modelled using a nite geometric series. b} What are the yalues of a. r and n in your model? c) Use the equation in {2] part {b}, or othennyise, to calculate the total money accrued by my investment at the end of the 5'\" year