document.write( "Question 440160: In 1920 the record for a certain race was 45.1 sec. In, 1980, it was 4303 sec.
\n" ); document.write( "Let R(t)= the record in the race and let t= the number of years since 1920.
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\n" ); document.write( "R(t)=? \n" ); document.write( "

Algebra.Com's Answer #304126 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi\r
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document.write( "In 1920 the record for a certain race was 45.1 sec
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document.write( "In, 1980, it was 4303 sec.
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document.write( " (1980,4303)
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document.write( " (1920, 45.1)   m = 4257.9 / 60 = 70.965
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document.write( " R(t) = 70.965t + 45.1 where t= the number of years since 1920.
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