document.write( "Question 790951: A runner's heart rate in beats per minute is given by the formula Heart rate = 65 + 53 / (4t + 1) where t is the number of minutes after the start of a cool-down period. \r
\n" ); document.write( "\n" ); document.write( "Part A: Find the runner's heart rate in 10 minutes.\r
\n" ); document.write( "\n" ); document.write( "Part B: When is the runner's heart rate equal to 68 beats per minute?
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Algebra.Com's Answer #479332 by josgarithmetic(39623)\"\" \"About 
You can put this solution on YOUR website!
Just plug in the numbers to do part A.\r
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\n" ); document.write( "\n" ); document.write( "Solve for t to do part B. You are starting with \"68=65%2B53%2F%284t%2B1%29\". Here is to get started:
\n" ); document.write( "\"68-65=53%2F%284t%2B1%29\"
\n" ); document.write( "\"3%284t%2B1%29=53\"
\n" ); document.write( "\"12t%2B3=53\"
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\n" ); document.write( "you should continue to completion.
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