What the answer to this

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.