The cost, in millions of dollars, of building a three-story high school in New York State was estimated to be C(x) = 1.6 + 0.12x − 0.0001x2 (20 ≤ x ≤ 400) where x is the number of thousands of square feet. Suppose that you are contemplating building a for-profit three-story high school and estimate that your total revenue will be $0.16 million dollars per thousand square feet. What is the profit function (in millions of dollars)?

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

answer:   y=2x-3

step-by-step explanation:

3

step-by-step explanation: