document.write( "Question 1041265: as dry air moves upward it expands, and in so doing it cools at a rate of about 5.5°F for each 1,000 foot rise up to about 40,000 feet. if the ground temperature is 70°F, then the temperature T at height h is given approximately by T= 70 - 0.0055h. for what range in altitude will the temperature be between 26°F and -40°F, inclusive? \n" ); document.write( "
Algebra.Com's Answer #656239 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
as dry air moves upward it expands, and in so doing it cools at a rate of about 5.5°F for each 1,000 foot rise up to about 40,000 feet. if the ground temperature is 70°F, then the temperature T at height h is given approximately by T= 70 - 0.0055h. for what range in altitude will the temperature be between 26°F and -40°F, inclusive?
\n" ); document.write( "-----------------
\n" ); document.write( "-40 <= 70-0.0055h <= 26
\n" ); document.write( "------
\n" ); document.write( "Subtract 70 along the line to get:
\n" ); document.write( "-110 <= 0.0055h <= -44
\n" ); document.write( "---------
\n" ); document.write( "Multiply thru by -1 to get:
\n" ); document.write( "44 <= 0.0055h <= 110
\n" ); document.write( "-----
\n" ); document.write( "Divide thru by 0.0055h to get:
\n" ); document.write( "8000 <= h <= 20,000
\n" ); document.write( "-----------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "------------
\n" ); document.write( " \n" ); document.write( "
\n" );