SOLUTION: Solve the equation 2^x-1 = 8. Give solution in fractional form. Can you show me how you come up with the answer so I can figure out how to do it. The sample my teacher gave

Algebra ->  Functions -> SOLUTION: Solve the equation 2^x-1 = 8. Give solution in fractional form. Can you show me how you come up with the answer so I can figure out how to do it. The sample my teacher gave       Log On


   

Question 324708: Solve the equation 2^x-1 = 8. Give solution in fractional form.
Can you show me how you come up with the answer so I can figure out how to do it. The sample my teacher gave us is nothing like this problem. Thanks for you help.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the equation 2^x-1 = 8
2^x = 7
x*log(2) = log(7)
x = log(7)/log(2)
x =~ 2.807355