Algebra question "I'm lost"
Algebra

Tutor: None Selected  Time limit: 1 Day 
Suppose that $8500 is placed in an account that pays 19% interest compounded each year. Assume that no withdrawals are made from the account. Do not do any rounding.
(a) Find the amount in the account at the end of 1 year?
(b) Find the amount in the account at the end of 2 year?
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A = P(1+r)^t
a) P = 8500 , r = 19% or 0.19 t = 1
substituting we get A = 8500 *(1+0.19)^1 = 8500*1.19 = 10115 (answer)
b) P = 8500 , r = 19% or 0.19 t = 2
substituting we get A = 8500 *(1+0.19)^2 = 8500*1.19^2 = 8500*1.4161 = 12036.85 (answer)
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Dear Student : I would be glad to complete your online assignments/classes of math, physics, mechanics, statistics, calculus etc. Inbox me if you are interested !!! I always deliver quality work in time.
thanks
I have another one for you if you can help
Ryan deposited $4000 into an account with 2.1%interest, compounded semiannually. Assuming that no withdrawals are made, how much will he have in the account after 3 years? Do not round any intermediate computations, and round your answer to the nearest cent.
I came up with a=4258.70834237
final: 4258.71
Semiannually mean rate will become half and time will be double
answer 4000*(1+0.0105)^6 = 4258.7083 rounded and hence 4258.71 Answer
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