ROLLER COASTER A roller coaster at an amusement park has a sign at the entrance that reads, "You must be this tall to ride" and has an arrow pointing to a spot \( 5 \) feet off the ground.

a. Explain what the sign at the roller coaster is saying about the heights of riders.

b. Write an inequality that represents the heights of people who are able to ride the roller coaster. Graph the solution set for this inequality.

c. Write an inequality that represents the heights in inches.