Trey has a bookcase with 8 shelves. Each shelf has 40 books. How many books are in the bookcase
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To draw a graph of y=2-1/2x the point on the graph starts a 2 then the next point goes down because of the -1/2x so it would subtracting 0.5 from each previous point
0.4x=x+8
4x=10x+80
6x=-80