A cockroach can travel at a speed of 3 mph, which is equivalent to 44 feet every 10 seconds. Which proportion could be used to find f, the distance in feet a cockroach can travel in ½ minute?

The proportion that could be used to find f, the distance in feet a cockroach can travel in ½ minute, is:

44 feet / 10 seconds = f feet / 30 seconds

This proportion is based on the cockroach's speed of traveling at 44 feet every 10 seconds. So, we set up the proportion to find out the distance traveled in ½ minute which is 30 seconds.