The three sides of a triangular fence have lengths 3x + 4, y − 5, and 7x − 1. What is the total perimeter?
10x + y − 2
10x + y + 8
10x + y
3x + y − 2
The total perimeter is the sum of the lengths of the three sides.
Perimeter = (3x + 4) + (y - 5) + (7x - 1)
Perimeter = 3x + 4 + y - 5 + 7x - 1
Perimeter = 3x + y + 4 - 5 - 1
Perimeter = 10x + y - 2
Therefore, the total perimeter is 10x + y - 2.