The graph shows a proportional relationship between the distance a car travels and the fuel It consumes. 280 240 200 160 Distance (miles) 120 80 40 0 1 2 3 4 5 6 7 Fuel (gallons) Based on the graph, the car requires gallons of fuel to travel 100 miles.​

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i can't solve unless i know what the line is

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geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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