Mr. Peterson plans to take dance lessons. He will pay a one-time registration fee of $35 plus $12 per lesson. Which equation can be used to find y, the total cost of x dance lessons?

A. y=12x+35
B. y=35x+12
C. y=12x-35
D. y=12(x+35)

A. y=12x+35

Step-by-step explanation:

i think that is the answer because Y is the solution and X represents the cost of each lesson, so it is 12x and then you add 35 to it.

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