10. Both banks were paying the same annual percentage rate (APR), but one had a higher annual percentage yield than the other (APY). 11. The bank that pays the highest annual percentage rate (APR) is always the best deal. 12. No bank could afford to pay interest every trillionth of a second because, with compounding, it would soon owe everyone infinite dollars. 13. My bank paid an annual interest rate (APR) of 5.0%%, but at the end of the year, my account balance had grown by 5.1%. 14. If you deposit $10,000 in an investment account today, it can double in value to $20,000 in just a couple of decades even at a relatively low interest rate (say, 4%). BASIC SKILLS & CONCEPTS 15-26: Review of Powers. Use the skills covered in the Brief Review on p. 207 to evaluate or simplify the following expressions. 15. 32 16. 34 17. 23 18. 3-2 19. 251/2 20. 81 1/2 21. 64-1/3 22. 21 x 23 23. 3* + 32 24. 6 X 6- 25. 251/2 + 25-1/2 26. 33 + 23