An experiment was conducted to determine if the weight of an animal can be predicted after a given period of time on the basis of the initial weight of the animal and the amount of feed that was eaten. Use the data, measured in kilograms, to do the followings. 

(a) Fit a multiple regression equation of the form

μ_{Y |x1,x2} = β₀ + β_1x1 + β_2x2.

(b) Predict the final weight of an animal having an initial weight of 35 kilograms that is given 250 kilograms of feed.

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Final Initial Feed Weight, y Weight, x1 Weight, x2 95 42 272 77 33 226 80 33 259 100 45 292 97 39 311 70 36 183 32 173 41 236 92 40 230 84 38 235