Question

Bobby's cat runs at x mph. Bobby's dog runs twice as fast as his cat. How far can Bobby's dog run in 30 minutes?

Answer 1

[AI-generated answer — Bot GPT 3.5]

Bobby's dog runs at 2*x mph.

Since 1 hour contains 60 minutes, then 30 minutes is 30/60 = 0.5 hours.
Bobby's dog can run 2*x*0.5 = x miles in 30 minutes. Answer: \boxed{x}.