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For Problems 7 and 8 sketch a graph for each function, and use the idea of "signed areas" to evaluate these definite integrals using geometry formulas without using a calculator. \text { a. } \int_{-2}^{2} f(x) d x \text { 8. } g(x)=2 x+3 \text { a. } \int_{-2}^{0} g(x) d x \text { b. } \int_{-2}^{0}|g(x)| d x \int_{-2}^{2}|f(x)| d x

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