Efren leaves home at 9: 00 a. m. and walks 4 miles per hour. his brother, gregory, leaves half and hour later and runs 8.5 miles per hour in the same direction as efren. predict the time at which gregory will catch up to efren.

Determine whether the question is a statistical question. explain. 1. what is the eye of sixth grade students? 2. at what temperature (in degree fahrenheit) does water freeze? 3. how many pages are in the favorite books of students your age? 4. how many hours do sixth grade students use the internet each week? you!