I really need helpll

Trigonometry hellllllpppppppp asap

Solve the system of equations. y= 2x y= x^2 - 15

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.