Lonnie walks for 30 minutes every day. The graph shows the number of Calories she burns in a week. Which is true of the graph?
A. The graph has no y-intercept.
B. The graph of the line is y = 100x.
C. Miles walked and Calories burned are in a proportional relationship.
D. The more Lonnie walks the faster she goes.

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+

25.45584

step-by-step explanation: