Zachary has a smart phone data plan that costs $40 per month that includes 10 GB of data, but will charge an extra $10 per GB over the included amount. How much would Zachary have to pay in a month where he used 3 GB over the limit? How much would Zachary have to pay in a month where he used went over by xx x GB?

b or 2, just plug these equations into your graphing calculator then check the graph to see the image. if it matches up then that's your answer!

geometry: triangles

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lessons

answers archive

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