I need a good grade on this

Based on what i know about mean, this doesn't add up.

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.

Solve 2x+y=3 x+y=5 in substitution method