#### 1872A climatologist analyzing satellite data observes that a particular Arctic region has lost ice cover at an average rate of 13.1 billion tons per year over the past 32 years. If the total ice mass lost during this period is equivalent to 420 billion tons, and the loss has been accelerating uniformly by 0.4 billion tons more per year each year, how much ice was lost in the final year? - Portal da Acústica