SOLUTION: Solve the following equations algebraically. Approximate the result to 3 decimal places. 2^x-1=27

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: Solve the following equations algebraically. Approximate the result to 3 decimal places. 2^x-1=27       Log On


   

Question 480430: Solve the following equations algebraically. Approximate the result to 3 decimal places.
2^x-1=27
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
2%5E%28x-1%29=27
x-1=log%282%2C27%29
x=1%2Blog%282%2C27%29
Use scientific calculator log%282%2C27%29=4.755
x=1%2B4.755
x=5.755