A9-member teams plans to run a 4 mile race distance markers are placed on the racecourse every 0.25 mile.

Place an x at every hash listed

Step-by-step explanation:

The reason being they are listed at 0, then 0.25, then 0.5, and so forth. The x's represent the exchanges so the hashes make a mark at every 0.25 miles

y > 1/3x

y < = -x + 4

hope this : )