Answer:
F. 4h ≥ 18
Step-by-step explanation:
In 1 hour, she walks 4 miles.
In h hours, she walks 4h miles.
She wants to walk at least 18 miles. That means she wants the distance she walks to be 18 miles or greater.
4h ≥ 18
Answer: F. 4h ≥ 18
