document.write( "Question 375697: Systolic blood pressure, the upper number in a blood pressure reading, is measured as your heart muscle contracts. The equation:
\n" ); document.write( "P ≤ 1/2(a) + 110
\n" ); document.write( "gives the normal systolic blood pressure P based on age a.
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Algebra.Com's Answer #267187 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
1.) You have an inequality, NOT an equation,
\n" ); document.write( "2.) What is the question again?
\n" ); document.write( "Pulse Rate When you exercise, your pulse rate rises. Recommended pulse rates vary with age and physical condition. For vigorous exercise, such as jogging, the inequality: \"0.7%28220+-+a%29+%3C=+R+%3C=+0.85%28220+-+a%29\" gives a target range for pulse rate R (in beats per minute), based on age a (in years). A. Substitute your age in the inequality above to find the range for your pulse rate when you are jogging. B. What is the target range for a person 25 years old? \r
\n" ); document.write( "\n" ); document.write( "For A.) If a = 20 (just an example, not my real age), \"0.7%28220+-+20%29+%3C=+R+%3C=+0.85%28220-+20%29\", or \"140+%3C=+R+%3C=+170\".\r
\n" ); document.write( "\n" ); document.write( "for B.) If a = 25, \"0.7%28220+-+25%29+%3C=+R+%3C=+0.85%28220-+25%29\", or \"136.5+%3C=+R+%3C=+1165.75\".\r
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