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12. (a) A ball is dropped from a height of 10 meters. Each time it falls...

12. (a) A ball is dropped from a height of 10 meters. Each time it falls h meters, it rebounds 0.8h meters, i.e. it bounces to 80% of its previous height.
In correct units, find the total distance traveled by the ball. (5p)

12. (b) You deposit $100 at the end of each quarter in an account that pays 6% interest compounded quarterly. Find the balance in the account after 20 years, in correct units and rounded appropriately. How much of this balance is principal and how much is interest? (5p)


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