Please show workings

4. (7 pts.) A woman wishes to save $20,000 for a down payment on a home. She can afford to set aside $1 100 per quarter, and she has found a credit union that pays 0.6% compounded quarterly. How long, in years, will it take her to save the money? Round your answer to the nearest hundredth. 5. (7 pts.) Ricardo wants to buy a large fishing boat so that he can go deep sea fishing. He needs $100,000 and can afford to make weekly payments of $300. At what interest rate, compounded weekly, should he take a loan out for if he wants to pay off the loan in exactly ten years? Round your answer to the nearest hundredth of a percent