Question 727305
The temperature has been as high as 89 and low as 43. Find values for a and b so that the solution to |x-a|_< b expresses the temperatures in terms of x. 
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Find the midpoint of the interval.
(89+43)/2 = 66
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Find the distance to an endpoint.
89-66 = 23
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|x-66| <= 23
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Ans: a = 66 ; b = 23
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Cheers,
Stan H.
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