Use left-endpoint approximation to approximate the area under the curve f(x) = – 0.3x + 25 between x = 1 and x = 5 using 4 rectangles. (Feel free to use your calculator on a majority of the calculations.) 45.5 Approximate the area under the curve f(x) = – 0.3x“ + 25 between x = 1 and x = 5 using 8 rectangles. 89.35 Approximate the area under the curve f(x) = – 0.3x² + 25 between x = 1 and x = 5 using 40 rectangles.

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