1 answer
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Part 1:
For the first triangle:
Perimeter = 3x + 4 + 4x - 3 + 8x + 9 = 15x + 10
For the second triangle:
Perimeter = x + 7 + x + 5 + 3x - 4 = 5x + 8
Part 2:
Difference in perimeter, P = (15x + 10) - (5x + 8) = 10x + 2
Part 3:
When x = 2,
Perimeter of the first triangle = 15(2) + 10 = 40
Perimeter of the second triangle = 5(2) + 8 = 18