Pablo folds a straw into a triangle with side lengths of 4x2−3 inches, 4x2−2 inches, and 4x2−1 inches. Which expression can be used to find the perimeter of the triangle, and what is the perimeter when x = 1.5?

Answer:
12x^2; 21
Step-by-step explanation:
4x^2-3=4×1.5^2-3=6
4x^2-2=4×1.5^2-2=7
4x^2-1=4×1.5^2-1=8
6+7+8=p=21