SOLUTION: Please help!!I have been working on these for hours. Solve each equation: a. ln(2x-1)=3 b. log x = 1/10,000 c. ln(2x-1) = 3 d. ln(x+3) = 1 Thank you so much!!

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: Please help!!I have been working on these for hours. Solve each equation: a. ln(2x-1)=3 b. log x = 1/10,000 c. ln(2x-1) = 3 d. ln(x+3) = 1 Thank you so much!!      Log On


   

Question 569183: Please help!!I have been working on these for hours.
Solve each equation:
a. ln(2x-1)=3
b. log x = 1/10,000
c. ln(2x-1) = 3
d. ln(x+3) = 1
Thank you so much!!
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
a. ln%282x-1%29=3
If ln%28a%29=b, then a=e%5Eb
2x-1=e%5E3 add 1 to the both sides of the equation
2x=e%5E3%2B1 divide by 2
x=%28e%5E3%2B1%29%2F2
use scientific calculator x=10.54
b. log+x+=+1%2F10000
If log%28a%29=b, then a=10%5Eb
x+=+10%5E%281%2F10000%29
d. ln%28x%2B3%29+=+1+
x%2B3=e%5E1
x=e-3