Let f(x) = (-3200x + 6,433,600) /9, where x is the year and f(x) is the number of active trash landfills in the United States in that year. For which of those years does the function yield the estimates given in the case study? (Hint: Refer to the first page of the Background Information for Project 5 for the statistics on the actual number of active landfills in the United States in 1988, 1994, and 2006. )
A. 1988 2006
B. 1994 2006
C. 1988 1994 2006
D. 1988 1994

Question

Let f(x) = (-3200x + 6,433,600) /9, where x is the year and f(x) is the number of active trash landfills in the United States in that year. For which of those years does the function yield the estimates given in the case study? (Hint: Refer to the first page of the Background Information for Project 5 for the statistics on the actual number of active landfills in the United States in 1988, 1994, and 2006. )
A. 1988 2006
B. 1994 2006
C. 1988 1994 2006
D. 1988 1994

anonymous · Answer

in 1988 there were 8000 open in 1994 there were half that in 2006 only 20% will be left of the 8000