The range of the function will exist on all real numbers. Option A is correct.
Given the function f (x) = x^2 + 2x – 6,
The function of the table will also give a quadratic function of degree two.
The sum of the functions will also lead to a quadratic function and since for all input values of the function, there will be a corresponding output, hence the range of the function will exist on all real numbers.
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