The original price I believe is $2.60
Answer:
Option C. 
Step-by-step explanation:
we know that
Triangles ADE and ABC are similar by AA similarity postulate
AB=2AD
Apply proportion

Find the length of segment DE

The answer would be C. Hope the picture helps.
Answer:
It equals 3
Step-by-step explanation:
To solve this it is basically like a normal problem you would just take out the X in it and divide 7 by 21 which leaves you with 3.
The previous question I answered was exactly like this.
6(4) - 2(6) = 12.
K = 4.