Abe earns $30.00 for raking his neighbor's leaves. He bought lunch and has $22.75 left. The equation 3x + 22.75 = 30.00 can be used to determine x the amount of money, in dollars, Abe spent for lunch.
Which value of a represents the amount of money, in dollars, Abe spent on lunch?
O A 2 = 7.25
OB. = 7.75
OC. 3 = 8.25
O D. = 8.75

$7.25

Step-by-step explanation:

take how much he has currently away from how much he know has to figure out how much he spent.

30 - 22.75 = 7.25

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