8. in a movie, you see a calendar with the pages flying away to show the passage of time. which type of symbol is this?

it means that the narrortor is either taking you back in time or in the future. that is really my favorite part of all movies

A: The scale factor is 3.  I found this by taking the origin (the center of dilation) and finding the number of units until point P (3)  then found the number of units until point p' (9)  9/3=3 so it is a scale factor of 3.
B: P"(-1,-2) Q" (0,3) and R"(1,0)
C: PQR and P"Q"R" are not congruent.  Because PQR went through a dilation changing the side lengths, it is no longer the same triangle as P"Q"R".  It is merely similar.