When finding the perimeter of a figure on a grid why do you not count the spaces inside the grid

Which of those sequences is a geometric sequence

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Manuela claims that and are congruent. which statement best describes her claim? she is incorrect because the segments do not have the same orientation. she is incorrect because the segments do not have the same length. she is correct because the segments have the same length. she is correct because the segments have the same orientation.