document.write( "Question 88936: These are on exponentials with logs; in case stan happens to see this, thanks alot for your help- I had to use my moms' last paycheck (she had to leave work to have surgery done on her anuerysms) to pay $400 for this class to make sure I have this Algebra II credit to graduate this upcoming year. You taking out time to do those 5 little problems were a BIG help and may god bless you.\r
\n" ); document.write( "\n" ); document.write( "2^x = 30\r
\n" ); document.write( "\n" ); document.write( "5^x - 1 = 3^x\r
\n" ); document.write( "\n" ); document.write( "3.5^3x + 1 = 65.4\r
\n" ); document.write( "\n" ); document.write( "16^x - 4 = 3^3 - x\r
\n" ); document.write( "\n" ); document.write( "7^x - 2 = 5^x
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #64640 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
2^x = 30
\n" ); document.write( "Take the log of both sides to get:
\n" ); document.write( "x(log2) = log30
\n" ); document.write( "x = [log30]/[log2]
\n" ); document.write( "x = 4.90689..\r
\n" ); document.write( "\n" ); document.write( "---------------------\r
\n" ); document.write( "\n" ); document.write( "5^(x - 1) = 3^x
\n" ); document.write( "Take the log of both sides
\n" ); document.write( "(x-1)log5 = xlog3
\n" ); document.write( "xlog5 -xlo3 = log5
\n" ); document.write( "x(log5 - log3) = log5
\n" ); document.write( "x(0.2218487..) = 0.6987000...
\n" ); document.write( "x = 5.15066...
\n" ); document.write( "---------------\r
\n" ); document.write( "\n" ); document.write( "3.5^(3x + 1) = 65.4
\n" ); document.write( "Take the log of both sides:
\n" ); document.write( "(3x+1)log3.5 = log65.4
\n" ); document.write( "(3log3.5)x = log65.4
\n" ); document.write( "x = 0.329266....
\n" ); document.write( "-----------\r
\n" ); document.write( "\n" ); document.write( "16^(x - 4) = 3^(3 - x )
\n" ); document.write( "Take the log of both sides
\n" ); document.write( "(x-4)log16 = (3-x)log3
\n" ); document.write( "Can you take it from here?
\n" ); document.write( "--------\r
\n" ); document.write( "\n" ); document.write( "7^(x - 2) = 5^x
\n" ); document.write( "Take the log of both sides
\n" ); document.write( "Can you take it from here?
\n" ); document.write( "=============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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