1. The problem states that the height $h$ of a person should not be less than 3.8 ft to ride the roller coaster. 2. This means the height must be at least 3.8 ft. 3. We express this using an inequality: $h \geq 3.8$. 4. Here, $\geq$ means "greater than or equal to," which includes 3.8 ft and any height taller than that. 5. So, the inequality $h \geq 3.8$ correctly represents the condition for riding the roller coaster.