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OpenStudy (anonymous):
9^(3x)=81^(x-4) All I got is 9^(3x)=(9^2)^(x-4) What do i do next?
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jimthompson5910 (jim_thompson5910):
Multiply the exponents 9^(3x)=(9^2)^(x-4) 9^(3x) = 9^(2(x-4)) since the bases are equal, the exponents must be equal, so... 3x = 2(x-4)
jimthompson5910 (jim_thompson5910):
solve that for x to find your answer
OpenStudy (anonymous):
x=-8?
jimthompson5910 (jim_thompson5910):
you are correct
OpenStudy (anonymous):
THX!!!
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jimthompson5910 (jim_thompson5910):
you're welcome
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