The median size of a new single family house built in the United States between 1987 and 2001 can be modeled as h(x)-0.399x²-15.198 221.738x+826.514square foot where x is the number of years since 1980, data from 75 xs 21.1 (Note: Use technology to complete the question.) (a) Locate the inflection point on the interval 7

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A: the value of sin^2(21degrees)+cos^2(21 degrees) - sin(70degrees)/cos(20degrees

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