Question 638021
2.	$2,350 is invested in account paying 9% compounded semiannually. How much will the account be worth after 8 years? Show your work
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compound interest formula: A=P(1+i)^n, P=initial investment, i=interest rate/period, n=no. of periods, A=amt after n periods.
For given problem: 
P=$2350, 
i=.09/2=.045, 
n=8*2=16
A=2350(1+.045)^16
=2350(1.045)^16
≈4753
after 8 years the account will be worth $4753
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3.	Change each exponential form to an equivalent logarithmic form:
These expressions are not in exponential form. See the definition of exponential forms in following problem 4.
a.	32 = 25
b. = 25–3/2
c.	12 = 1441/2
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4.	Change each logarithmic form to an equivalent exponential form:
a.	log 3 81 = 4
Exponential form: 3^4=81 [base(3) raised to the log of the number(4)=number(81)]
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b.	log 10 0.0001 = –4
Exponential form: 10^-4=0.0001 [base(10) raised to the log of the number(-4)=number(0.0001)]