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3 votes
Log2 + log(4x-1) = 3

User Jason John
by
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2 Answers

4 votes
10^2.7=4x-1
(10^2.7+1)/4=x
x=125.55
User Matt Hatcher
by
7.7k points
4 votes
remember
logx+logy=log(xy) so
log2+log(4x-1)=log2(4x-1)=log8x-1
since no base is mentioned, it it base 10


now we have
log 8x-2, base 10=3
means
10 must be raised to the 3rd power to get 8x-2
therfor
10^3=8x-2
1000=8x-2
1002=8x
divide 8 both sides
125.25=x


x=125.25

User Vboerchers
by
8.0k points

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