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A medical researcher found a significant relationship among a person's age x1, cholesterol level x2, sodium level of the blood x3, and systolic blood pressure y. The regression eqauation is y1 = 97.7 + 0.691x1 + 219x2 - 299x3. Predict the systolic blood pressure of a person who is 35 years old and has a cholesterol level of 194 milligrams per deciliter (mg/dl) and a sodium blood level of 142 millieqivalents per liter (mEq/l).

(all the x's are italicized and have the # written a little lower than the x-not sure how to type that correctly. The y has the 1 written a little above it)

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