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Find the Left Riemann Sum that approximates the area under the curve of y=e^(4x) on the interval [0,2] with 8 rectangles.? How to know if a compound is aromatic by just looking at the formula? CHEMISTRY? What's oxygen mean if it is acid? If we where able to colonize 10 galaxys per 10,000 years how many galaxys would we colonize in 5 billion years? Why don't Mexico just change its capital city to L.A.?