document.write( "Question 1138686: Solve each equation. Show all steps and work. Round your answers to four decimal places.
\n" ); document.write( "a. 6^2x=250
\n" ); document.write( "b.〖log〗_3 (x-3)+〖log〗_3 (x-7)=4\r
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\n" ); document.write( "\n" ); document.write( "Given the function f(x)=〖log〗_2 (x-2)-1.
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Algebra.Com's Answer #756489 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "a. \r
\n" ); document.write( "\n" ); document.write( "\"6%5E%282x%29=250\"....take a log of both sides\r
\n" ); document.write( "\n" ); document.write( "\"log%286%5E%282x%29%29=log%28250%29\"\r
\n" ); document.write( "\n" ); document.write( "\"2x%2Alog%286%29=log%282%2A5%5E3%29\"............since \"log%286%29=log%282%2A3%29=log%282%29%2Blog%283%29\", and \"log%282%2A5%5E3%29=log%282%29+%2B+3log%285%29\", we have\r
\n" ); document.write( "\n" ); document.write( "\"2x%28log%282%29%2Blog%283%29%29=log%282%29+%2B+3log%285%29\"\r
\n" ); document.write( "\n" ); document.write( "\"x=%28log%282%29+%2B+3log%285%29%29%2F2%28log%282%29%2Blog%283%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"x=%280.69314718+%2B+4.8283137373%29%2F2%280.69314718%2B1.098612288668%29\"\r
\n" ); document.write( "\n" ); document.write( "\"x=5.5214609173%2F3.583518937336\"\r
\n" ); document.write( "\n" ); document.write( "\"x=1.5408\"\r
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\n" ); document.write( "\n" ); document.write( "\"log%283%2C+%28x-3%29%29%2Blog%283+%2C%28x-7%29%29=4\" .....convert to base \"10\"\r
\n" ); document.write( "\n" ); document.write( "\"log%28%28x-3%29%29%2Flog%283%29%2Blog%28%28x-7%29%29%2Flog%283%29=4\" ....both sides multiply by \"log%283%29\"\r
\n" ); document.write( "\n" ); document.write( "\"log%28%28x-3%29%29%2Blog%28%28x-7%29%29=4+log%283%29\"\r
\n" ); document.write( "\n" ); document.write( "\"log%28%28x-3%29%28x-7%29%29=+log%283%5E4%29\".......since log same, we have\r
\n" ); document.write( "\n" ); document.write( "\"%28x-3%29%28x-7%29=+3%5E4\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2-7x-3x%2B21=+81\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2-10x%2B21-+81=0\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2-10x-+60=0\"......use quadratic formula\r
\n" ); document.write( "\n" ); document.write( "\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a\"\r
\n" ); document.write( "\n" ); document.write( "\"x=%28-%28-10%29%2B-sqrt%28%28-10%29%5E2-4%2A1%2A%28-60%29%29%29%2F%282%2A1%29\"\r
\n" ); document.write( "\n" ); document.write( "\"x=%2810%2B-sqrt%28100%2B240%29%29%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"x=%2810%2B-sqrt%28340%29%29%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"x=%2810%2B-18.4391%29%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"x=%285%2B-9.2195%29\"\r
\n" ); document.write( "\n" ); document.write( "solutions:\r
\n" ); document.write( "\n" ); document.write( "\"x=5%2B9.2195\"=>\"x=14.2195\"
\n" ); document.write( "\"x=5-9.2195\"=>\"x=+-4.2195\"=> since log disregard negative solution\r
\n" ); document.write( "\n" ); document.write( "so, your solution is:\"x=14.2195\"\r
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\n" ); document.write( "\n" ); document.write( "Given the function \"f%28x%29=+log%282%2C+%28x-2%29%29-1+\"\r
\n" ); document.write( "\n" ); document.write( "1. Graph the function\r
\n" ); document.write( "\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+log%282%2C+%28x-2%29%29-1%29+\"\r
\n" ); document.write( "\n" ); document.write( "2. Find its domain & range\r
\n" ); document.write( "\n" ); document.write( "domain: { \"x\" element \"R\" : \"x%3E2\" }\r
\n" ); document.write( "\n" ); document.write( "range: \"R\" (all real numbers)\r
\n" ); document.write( "\n" ); document.write( "3. Write the equation of its asymptote\r
\n" ); document.write( "\n" ); document.write( "Vertical asymptote: \"x=2\"\r
\n" ); document.write( "\n" ); document.write( "\"log%28x+-+2%29%2Flog%282%29+-+1\"->\"-infinity\" as \"x-%3E2\"\r
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\n" ); document.write( "\n" ); document.write( "Horizontal asymptote: \"none+\"\r
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