I'm almost certain it's C :)
Radius of 1 button = r = 3x
Fabric required to cover 1 button = Area of the circle
= 
= 
= 
Total number of buttons = x
Fabric required to cover 1 button =
Fabric required to cover x buttons = 
Hence, fabric required to cover x buttons
sq. units
Answer:
true
Step-by-step explanation:
I hope this helps you
-14+?= -17
?= -17+14
?= -3
Answer:
2x +3x =7-13=4+8
Step-by-step explanation:
5x= -6= 12