SOLUTION: how do you re-write 3^x=90 as a logarithm and solve it?

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Question 457495: how do you re-write 3^x=90 as a logarithm and solve it?
Found 2 solutions by amoresroy, josmiceli:
Answer by amoresroy(361) About Me  (Show Source):
You can put this solution on YOUR website!
how do you re-write 3^x=90 as a logarithm and solve it?
3^x = 90
Log both sides to get
Log 3^x = Log 90
x Log 3 = Log 90
x = Log 90/ Log 3
x = 4.0959

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+3%5Ex+=+90+
+x%2Alog%283%29+=+log%2890%29+
+x+=+log%2890%29+%2F+log%283%29+
+x+=+1.9542+%2F+.4771+
+x+=+4.096+
check answer:
+3%5E4.096+=+90+
+90.009+=+90+
close enough