Checking blood flow and nerves is essential for injuries to which part of the body

I think the answer to this is Extremities injury.
you can do that by:
-putting a pressure on the injured area with something cold.
-wrap the injured area with a bandage in order to put a rest on it. 

Ibelieve it's choice d.

This is a pretty on point question because all we need to do is replace 's' in the equation with '35'.the calculation will be9.95 + 0.30s = c9.95 + 0.30 (35) = c9.95 + 10.5  = cc = 20.45