document.write( "Question 511153: To determine the number
\n" ); document.write( "of ounces of fluid that a person should drink in a
\n" ); document.write( "day, divide his or her weight in pounds by 2 and then
\n" ); document.write( "add 0.4 ounce for every minute of exercise.
\n" ); document.write( "(a) Write a function that gives the fluid requirements
\n" ); document.write( "for a person weighing 150 pounds and exercising
\n" ); document.write( "x minutes a day.\r
\n" ); document.write( "\n" ); document.write( "(b) If a 150-pound runner needs 89 ounces of fluid
\n" ); document.write( "each day, determine the runner’s daily minutes of
\n" ); document.write( "exercise.
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Algebra.Com's Answer #342038 by John10(297)\"\" \"About 
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a) Let x be the number of daily minutes and f(x) is the function (number of ounces of fluid):\r
\n" ); document.write( "\n" ); document.write( "f(x) = w/2 + 0.4x where w is the weight.\r
\n" ); document.write( "\n" ); document.write( "If w = 150 lbs then \r
\n" ); document.write( "\n" ); document.write( "f(x) = 150/2 + 0.4x = 75 + 0.4x\r
\n" ); document.write( "\n" ); document.write( "b) If the f(x) = 89 oz\r
\n" ); document.write( "\n" ); document.write( "0.4x + 75 = 89
\n" ); document.write( "0.4x = 89 - 75
\n" ); document.write( "0.4x = 14
\n" ); document.write( "x = 14/0.4
\n" ); document.write( "x = 35 oz of fluid
\n" ); document.write( "John10:)
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