Recall that the perimeter is the sum of all the sides. So, for the first triangle, the perimeter is 4x+2+7x+7+5x-4 = 16x + 5
second triangle: x+3 + 2x-5 + x+7 (combine like terms)
Part b: Subtract the perimeter of the smaller triangle from the perimeter of the larger triangle.
The formula for the surface area of a sphere is

Answer:
line g
Step-by-step explanation I really don't know but if i had to choose an answer i would pick line g
2782 is the answer my friend