Tim's taxicab business charges a fixed dollar amount to pick up passengers, plus a per-mile charge. the fixed cost, y, given as a function of the number of miles, x, is y = 2x + 3. what is the per-mile charge, in dollars, for each additional mile? enter your answer in the box. use number(s) only.

5

step-by-step explanation:

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