Answer:
8t + u - 7 or -7 + u + 8t ( to match the multiple choice answers)
Step-by-step explanation:
the perimeter is the distance around an object, therefore we need to add up all three sides of the triangle to get the perimeter
2t + 2 + 6t - 7 + u - 2 = perimeter
combine like terms to simplify
2t + 6t + u + 2 - 2 - 7
8t + u -7
