3. To the right is a plot of the line of equality and the Lorenz curve for Poland in the year 2018. Shade the area we need to find first Lorenz Curve - Poland 2018 so that we can calculate the Gini index. Then, write an expression y = 2. 0833x5 - 3. 75x4 + 2.2708x3 + 0. 1125x2 + 0. 2833x for THIS AREA that includes a definite integral. 0.8 Poland -Line of Equality Cumulative Wealth 0.6 0.4 0.2 0.2 0.4 0.6 0.8 Cumulative Percentage of the Population 4. Use the integral expression you wrote in #3 and the Fundamental Theorem of Calculus to find the Gini index for Poland in the year 2018. Show the substitutions necessary, but use fnint to do the calculation. 5. Which country has more income EQUALITY? Explain how you know