Question $5$

Suppose the Random Bank is now offering $9\%$ interest on balances of less than $$5000,12\%$

for balances of $$5000$ or more but less than $$10000$ and $15\%$ for balances of $$10000$ or more.

Calculate or evaluate a customer's new balance after one year given the initial balance as

$$1500$ multiplied by a random number.