document.write( "Question 791770: I dont know how to get these? I only know f(x) 's? help me please!\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " f(x) = 15x - 12
\n" ); document.write( " g(x) = -15x2 + 14x - 10
\n" ); document.write( " find g(g(7))
\n" ); document.write( "A -6288203
\n" ); document.write( "B6543
\n" ); document.write( "C639
\n" ); document.write( "D-4595
\n" ); document.write( "E 538
\n" ); document.write( "F -162,632 \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( ". f(x) = -13x2 + 12x + 14 g(x) = 11x - 13
\n" ); document.write( " find f(g(7))
\n" ); document.write( "A -162,632
\n" ); document.write( "B-6288203
\n" ); document.write( "C639
\n" ); document.write( "D-4595
\n" ); document.write( "E 538
\n" ); document.write( "F -52466 \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "f(x) = 11x + 15
\n" ); document.write( " g(x) = -11x3 - 15x2 + 13x - 13
\n" ); document.write( " find g(f(6))
\n" ); document.write( "A -4595
\n" ); document.write( "B-52466
\n" ); document.write( "C-6288203
\n" ); document.write( "D-5943226
\n" ); document.write( "E 639
\n" ); document.write( "F 538
\n" ); document.write( "

Algebra.Com's Answer #479723 by MathLover1(20849)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=+15x+-+12\"
\n" ); document.write( "\"g%28x%29+=+-15x%5E2+%2B+14x+-+10\"
\n" ); document.write( "
\n" ); document.write( " find \"g%28g%287%29%29+\"\r
\n" ); document.write( "\n" ); document.write( "first calculate \"g%287%29\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28x%29+=+-15%2A7%5E2+%2B+14%2A7+-+10\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28x%29+=+-15%2A49+%2B+14%2A7+-+10\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28x%29+=+-735+%2B+98+-+10\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28x%29+=+-647\"\r
\n" ); document.write( "\n" ); document.write( "now calculate \"g%28g%287%29%29+\"=\"g%28-647%29+\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28-647%29+=+-15%2A%28-647%29%5E2+%2B+14%2A%28-647%29+-+10\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28-647%29+=+-15%2A%28418609%29-9058+-+10\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28-647%29+=+-6279135+-+9068\"\r
\n" ); document.write( "\n" ); document.write( "\"g%28-647%29+=+-6288203\"\r
\n" ); document.write( "\n" ); document.write( "so, answer is : \"A\" \"-6288203+\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=+-13x%5E2+%2B+12x+%2B+14\"\r
\n" ); document.write( "\n" ); document.write( "\"+g%28x%29+=+11x+-+13+\"
\n" ); document.write( "
\n" ); document.write( " find \"f%28g%287%29%29\"\r
\n" ); document.write( "\n" ); document.write( "first calculate \"g%287%29\"\r
\n" ); document.write( "\n" ); document.write( "\"+g%287%29+=+11%2A7+-+13+\"
\n" ); document.write( "\"+g%287%29+=+77+-+13+\"
\n" ); document.write( "\"+g%287%29+=+64+\"\r
\n" ); document.write( "\n" ); document.write( "now \"f%28g%287%29%29\" which is \"f%2864%29\"\r
\n" ); document.write( "\n" ); document.write( "\"f%2864%29+=+-13%2A64%5E2+%2B+12%2A64+%2B+14\"\r
\n" ); document.write( "\n" ); document.write( "\"f%2864%29+=+-13%2A4096+%2B+768+%2B+14\"\r
\n" ); document.write( "\n" ); document.write( "\"f%2864%29+=+-53248+%2B+782\"\r
\n" ); document.write( "\n" ); document.write( "\"f%2864%29+=+-52466\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "answer is: \"F\"\"+-52466+\"\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=+11x+%2B+15\"
\n" ); document.write( "\"g%28x%29+=+-11x%5E3+-+15x%5E2+%2B+13x+-+13\"
\n" ); document.write( "find \"g%28f%286%29%29\"\r
\n" ); document.write( "\n" ); document.write( "first calculate \"f%286%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"f%286%29+=+11%2A6+%2B+15\"
\n" ); document.write( "\"f%286%29+=+66%2B+15\"
\n" ); document.write( "\"f%286%29+=+81\"\r
\n" ); document.write( "\n" ); document.write( "then \"g%28f%286%29%29\"=\"g%2881%29\"\r
\n" ); document.write( "\n" ); document.write( "\"g%2881%29+=+-11%2A81%5E3+-+15%2A81%5E2+%2B+13%2A81+-+13\"
\n" ); document.write( "\"g%2881%29+=+-11%2A531441+-+15%2A6561+%2B+1053+-+13\"
\n" ); document.write( "\"g%2881%29+=+-5845851+-+98415+%2B+1040\"
\n" ); document.write( "\"g%2881%29+=+-5944266+%2B+1040\"
\n" ); document.write( "\"g%2881%29+=+-5943226\"\r
\n" ); document.write( "\n" ); document.write( "answer is: \"D\" \"-5943226\"
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