Subjects algebra

Function Evaluation 747522

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1. **State the problem:** Given the functions \(f(x) = 3x - 7\), \(g(x) = 2x^2 - 3x + 1\), \(h(x) = 4x + 1\), and \(k(x) = -x^2 + 3\), find the value of \(f(x) - g(x)(-2)\). 2. **Recall the formula and rules:** To find \(f(x) - g(x)(-2)\), we first evaluate \(g(-2)\) and then subtract it from \(f(x)\). This means: $$f(x) - g(-2)$$ 3. **Evaluate \(g(-2)\):** $$g(-2) = 2(-2)^2 - 3(-2) + 1 = 2(4) + 6 + 1 = 8 + 6 + 1 = 15$$ 4. **Substitute \(g(-2)\) into the expression:** $$f(x) - g(-2) = (3x - 7) - 15$$ 5. **Simplify the expression:** $$3x - 7 - 15 = 3x - 22$$ 6. **Interpretation:** The expression \(f(x) - g(x)(-2)\) simplifies to \(3x - 22\). Since the question asks for a value, we need to check if \(x\) is given or if the question is about the value of the expression at some \(x\). Since no \(x\) is specified, the expression is \(3x - 22\). 7. **Check multiple choice answers:** The options are numbers (-6, 14, -28, 6), so likely the question expects the value of \(f(x) - g(x)(-2)\) at some \(x\). Since no \(x\) is given, possibly the question means \(f(-2) - g(-2)\). 8. **Evaluate \(f(-2)\):** $$f(-2) = 3(-2) - 7 = -6 - 7 = -13$$ 9. **Calculate \(f(-2) - g(-2)\):** $$-13 - 15 = -28$$ 10. **Final answer:** \(-28\) matches one of the multiple choice options. **Answer:** \(-28\)