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#question3689867 5 Landfill Usage: Annual Amount of Garbage Taken to a Landfill Year Garbage (million tons) 1980 78 1985 96 1990 112 1995 119 2000 129 2005 142 2010 177 (a) Using the table values only, identify during which 5-year period the amount of garbage showed the slowest Increase. to What was the average rate of change during that 5-year period? (Round your answer to one decimal place.) million tons per year (b) Find the function for the cubic model that gives total amount of garbage taken to a landfill in million tons where x is the number of years since 1980, with data from 0 5 x