Part 1: Write an expression in simplest form for the perimeter of each triangle.
Triangle A= Side 1- 3x+4, Side 2- 4x-3, Side 3- 8x +9
Triangle B= Side 1- x+7, Side 2- x+5, Side 3- 3x-4
Perimeter of triangle A = 3x+4 + 4x-3 + 8x +9
= 15x + 10
Perimeter of triangle B = x+7 + x+5 + 3x-4
= 5x + 8