Question 1028824
a. 3^2n+1 = 81
3^(2n+1) = 3^4
2n+1 = 4
n = 3/2
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b. log10 4 + log10 (z+3)=2
log(4z+12) = 2
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4z+12 = 10^2
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4z = 88
z = 22
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Cheers,
Stan H.
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