You had 22 to spend on seven pencils. after buying them you had 8 how much did each pencil cost

2 per pencil

your subtract how much you started with by what is left. After that, you divide that number by how much you bought.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.