Answer:
8x-y+4=0
Step-by-step explanation:
because 8x-y+4=-4+4
uns 20 a 25%
.............................
Answer: perm will cost $48
Let x be cost of haircut
So perm will cost her 2x
So
x + 2x + 5 = 77
3x = 72
x = 24
Perm will cost 2x24 = 48
The correct answer is,