Can u show me how to multiply and add it 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.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

X2 + y 2 = 36 x + y = 6 solve the system of equations.