SOLUTION: Solve for x: 10×3^x-1 -7 =243

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Question 931021: Solve for x: 10×3^x-1 -7 =243
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for x:
10×3^x-1 -7 =243
3^(x-1)=250/10=25
(x-1)(log(3)=log(25)
x-1=log(25)/log(3)≈2.93
x=2.93+1=3.93