Respuesta :

Answer:

  F.  4h ≥ 18

Step-by-step explanation:

Liang wants ...

   distance ≥ goal

We know that ...

   distance = speed · time . . . . . . where speed = 4 mph, and time = h hours

Then the appropriate inequality for Liang's goal of 18 miles or more is ...

  4h ≥ 18