For a certain region in the world, the age distribution of the population is approximately modeled (in millions) by the function f(x) where x varies from 0 to 9 decades. (a) Evaluate the integral over the interval [0, 8]. Round to the nearest integer as needed. = 40.3 +3.3x - 0.895x² (b) What does the value of this integral represent? O The total number of people (in millions) under the age of 8 who currently live in the region The increase in the number of people (in millions) aged 0 to 80 who currently live in the region O The number of people (in millions) aged 0 to 80 who have ever lived in this region O The total number of people (in millions) aged 0 to 80 who currently live in the region

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