Answer:
C=10
Step-by-step explanation:
A^2 + B^2 = C^2
A=6
B=8
C=?
A^2=36
B^2=64
C^2=100
The percent markup is 62.5%
The work is provided in the image attached.
Here is the equation you should use.
2(x+7) = -36
EASSYYY
1364
