Economists use economic models to replicate real life situations for economic policy. Production possibilities frontier is one of the few economic models used to explain the behavior of economies. You are supposed to use a production possibilities frontier to show society’s trade-off between two ""goods"" – a clean environment and the quantity of industrial output. What factor do you think determines the slope of the frontier? Illustrate what happens to the frontier if engineers develop a new way of producing electricity that emit lesser pollutants

Exercise 4-9presented below is information related to martinez corp. for the year 2017.net sales $1,399,500 write-off of inventory due to obsolescence $80,440cost of goods sold 788,200 depreciation expense omitted by accident in 2016 43,600selling expenses 65,800 casualty loss 53,900administrative expenses 53,500 cash dividends declared 43,300dividend revenue 22,100 retained earnings at december 31, 2016 1,042,400interest revenue 7,420 effective tax rate of 34% on all items exercise 4-9 presented below is information relateexercise 4-9 presented below is information relate prepare a multiple-step income statement for 2017. assume that 61,500 shares of common stock are outstanding. (round earnings per share to 2 decimal places, e.g. 1.49.)prepare a separate retained earnings statement for 2017. (list items that increase retained earnings first.)