Evaluate the function h(x) = x +7x + 1 at the given values of the independent variable and simplify a. h(1) b. h(-1) c. h( - x). d. h(3a) a. h(1) = (Simplify your answer.) b. h(- 1) = (Simplify your answer) c. h(-x) = (Simplify your answer.) d. h(3a) = (Simplify your answer.) %3D

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