John has $132.55 in his bank account. he wants to join a guitar class that charges a $15 fee every week. john plans to take the class for 12 weeks. if john pays for 12 weeks of guitar classes from his account, his account balance will be what?

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.