Answer:
d-2 < -1
Step-by-step explanation:
Mrs.Kennedy can divide 315 by 10 and then when she gets her answer she can round up to get her answer.
since the lengths of all those four sides are in a 3:2:6:7 ratio, and the whole perimeter is 126, what we do is, simply divide the whole by (3+2+6+7) and distribute accordingly.

Answer:
b is the answer
Step-by-step explanation: