15. Evaluate each sum (to the nearest thousandth). 15 17. Σ3(2)** k=1 B. Exercises 12 k 18. Σ41) 246) k=1 eval 14. S 16. S Find the specified sum for each geometric sequence. 21. S15 if a₁ = 7 and an = 23. S, if a3 = 36 and r = 25. So, if a2 = 15 and as -2an-1 510 19. 2 Use the future value formula, FV = P 1+ (1 + i)n-1 , to d i um. e. the 27. $2000 deposited annually for 40 yr earning 6% A 28. $30 deposited monthly for 25 yr earning 4% AP 29. $10 deposited weekly for 50 yr earning 5.2% A Solve using geometric series. 30. A school pays $140,000 for its staff's medical ance increases by 8% each year, what will the 31. You lease a condo for $850 a month and the re pense if you live in the condo for 5 yr? 32. A church prayer chain is set up so the pastor each call five members, who each call five of How many people can be notified with four m 33. A weather bal the first minut

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A: Given:

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