document.write( "Question 388254: In 1998, there were 92,000 personal computer sold. By 2005, this figure has increased to 220,000. Write an exponentional function in the form y=ab^x to model the number of personal computers sold. \n" ); document.write( "
Algebra.Com's Answer #274569 by Fombitz(32388)\"\" \"About 
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Let \"x\" be the number of years since 1998.
\n" ); document.write( "So in 1998, \"x=0\".
\n" ); document.write( "\"y=ab%5E0=92000\"
\n" ); document.write( "\"a=92000\"
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\n" ); document.write( "In 2005, \"x=7\".
\n" ); document.write( "\"y=92000b%5E7=220000\"
\n" ); document.write( "\"b%5E7=2.391304\"
\n" ); document.write( "\"b=1.1326\"
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\n" ); document.write( "\"highlight%28y=92000%281.1326%29%5Ex%29\", where \"x\" is the number of years since 1998.
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