Evaluate the function at the indicated points. R(x, y, z) = 4 - x -3y + 2z + 0.03xy - 0.02xz        a)  (2, 1, -3) b)  (-3, 2, -1)  --------------------------------------------------------------- CHOOSE THE ANSWER 1) a)  -6.82     b) -0.15  2) a)  -6.82     b) -0.24  3) NONE IS CORRECT 4)a)  -6.88     b) -0.24

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