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3. [-/11 Points] DETAILS For each of the following, enter your answers correct to two decimal places. a. Find the area under the curve y

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3. [-/11 Points] DETAILS For each of the following, enter your answers correct to two decimal places. a. Find the area under the curve y = 5x + 2 for x between 3 and 6. Area = b. Find the area between the curve 2 y and the x-axis for x between -5 and -3. Area = c. Find the area between the curve y = x - 3x and the x-axis for x between 1 and 8. Area =[ d. Find the area bounded by the curves y = 3x + 1 and y = 3x + 1 Area = 4. [0/14 Points] DETAILS PREVIOUS ANSWERS The birth rate in a certain city is described by the following function b (t) = 8.48 - 0.04t- The city's death rate is given by d (t) = 4 +0.03t- Here, t is measured in years, and t = 0 corresponds to the start of the year 1990. The birth and death rates are measured in thousands of births or deaths per year. At the start of 1990, the population of the city is 300 thousand. Enter all the following answers correct to two decimal places, a. Calculate the total number of births between the start of 1990 and the end of 1999. Number of births = * thousand. b. Calculate the total number of deaths over the same period Number of deaths = * thousand. c. What is the population of the city at the start of year 2000? Population : * thousand. d. Considering just the period from the start of 1990 to the start of 2000, over what interval is the population increasing? (Enter your dates as years, not the number of years since 1990.) Increasing from until Over what interval is the population decreasing? Decreasing from until e. Calculate the area between the curves y = b ( t ) and y = d ( t ) for t between 0 and 10. Area

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