You spent $12 you left an 18% tip how much was your total

the total was 12+2.16 = 14.16 $

From the picture below, we can see both the polygon and its translated version. The coordinates of point F is (4,6). And its translated counterpart is F' from the polygon D'E'F'G'. The coordinates of F' is (1,6) since all the points are translated 3 units to the left.