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Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?


8x2 + 34; 43.6 centimeters

8x2 + 34; 45.52 centimeters

4x2 + 17; 21.8 centimeters

4x2 + 17; 22.76 centimeters