Which situation is best modeled by an exponential function? A.
the area of a circle that has a radius of x inches

B.
the height of a plant that grows x inches each week

C.
the temperature of an object that is cooling by x% per hour

D.
the cost of a taxi ride that costs a flat rate plus x dollars per mile

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

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