Calculate the left Riemann sum for the given function over the given interval using the given value ofn. [When rounding, round your answer to four decimal places. If using the tabular method, values of the function in the table should be accurate to at least five decimal places.) x) = e"r over [2, 2], n = 2 :| Use the given graph to estimate the left Riemann sum for the given interval with the stated number of subdivisions. {Round your answer to the nearest integer.) The xfcoordinate plane is given. A curve passes through the 5 following approximate points. ' (1, 3.4) {2, 11.?) (3, 3.9) (4, 0.8} (s, 3.9) [5, 11.?) (1', 3.4) Calculate the left Riemann sum for the given function over the given interval, using the given value of n. (when rounding, round your answer to four decimal places. If using the tabular method, values of the function in the table should be accurate to at least five decimal places.) HINT [See Example 2.] x) = 60;: 15 over [0, 2], n = 4 :l Calculate the left Riemann sum for the given function over the given interval using the given value ofn. [When rounding, round your answer to four decimal places. If using the tabular method, values of the function in the table should be accurate to at least five decimal places.) x] 2 9x2 over [1, 5], n = 4 E The rate of a country's sales of bottled water for the period 20022014- could be approximated by 5(E') = 0.06t2 0.22t + 8.2 billion gallons per year (0 s t 5 2), where t is time in years since the start of 200?. Use a Riemann sum with n = 5 to estimate the total sales of bottled water in this country from the start of 2008 to the start of 2014. (Round your answer to the nearest billion gallons. Use a left Riemann sum to find your answer. Round your answer to the nearest whole number.) HINT [See Example 2.] \\:| billion gallons