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20. Solve. Round all dollar amounts to the nearest cent. a.Marty borrowed $450 at 9% interest for 3 months. Find the total amount due at

20. Solve. Round all dollar amounts to the nearest cent.

a.Marty borrowed $450 at 9% interest for 3 months. Find the total amount due at the end of the 3 months.

b.$5000 is compounded quarterly at a rate of 10%. Find the total amount in the compound interest account at the end of 20 years. (The compound interest factor is 7.20957).

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