Posted by Bethany on Saturday, April 12, 2008 at 6:08pm.
Can someone tell me how they got the answer.
Problem: 9^(x+6)=7x
My answer was: 52.458
The correct answer is: 51.138
I have checked my input on my calculator, and cannot figure it out.

Math  Bethany, Saturday, April 12, 2008 at 6:10pm
Sorry, my problem is:
9^(x+6)=7^x

Math  Bobby, Saturday, April 12, 2008 at 6:16pm
52.4576 is the correct answer.
ln9^(x+6)=ln7^x
(x+6)*ln(9)=x*ln(7)
(x+6)/x=ln(7)/ln(9)
x/x+6/x=.885622
1+6/x=.885622
6/x=.8856221
6/x=.114378
x=6/(.114378)
x=52.4576
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