document.write( "Question 1130631: The temperature at various times on a summer day at a resort in southern California is given in the following table. The variable t is the number of minutes after 6:00 A.M., and the variable T is the temperature in degrees Fahrenheit.
\n" ); document.write( "t (min) T (°F)
\n" ); document.write( "20 62
\n" ); document.write( "40 61
\n" ); document.write( "80 67
\n" ); document.write( "120 76
\n" ); document.write( "160 81
\n" ); document.write( "200 79
\n" ); document.write( "240 84
\n" ); document.write( "280 87
\n" ); document.write( "320 84
\n" ); document.write( "360 85
\n" ); document.write( "400 78
\n" ); document.write( "(a) Find a quadratic model for these data. (Round all numerical values to five decimal places.)
\n" ); document.write( "T =
\n" ); document.write( "(b) Use the model to predict the temperature at 1:00 P.M. Round to the nearest tenth of a degree.___°F \n" ); document.write( "
Algebra.Com's Answer #747270 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
enter these and pick quadratic regression
\n" ); document.write( "y=-0.000365 x^2+.20835 x+55.15807
\n" ); document.write( "1 pm is 7 hours after 6 am or 420 minutes and temperature is 78.3 degrees
\n" ); document.write( "\"graph%28300%2C300%2C-50%2C500%2C-20%2C90%2C-0.000365x%5E2%2B.20835x%2B55.15807%29\"\r
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