Some types of worms have a remarkable capacity to live without moisture. The table shows the number

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Some types of worms have a remarkable capacity to live without moisture. The table shows the number of worms y surviving after x days in one study.image


(a) Use regression to find a quadratic function f that models these data. 


(b) Graph f and the data in the same window. 


(c) Solve the equation f(x) = 0 graphically. Do both solutions have meaning? Explain.

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