Determine which number is greater and tell how many times as great. 7×1012 and 3.5×109

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

Astudent showed the steps below while solving the inequality |x-4|< 1 by graphing.

Im so bad at fractions they are not my best math thing to work on