You are going to model the population size of a species of bird that is gradually becoming extinct. which graph is the best choice for doing this? a) b) c) d)

Graph D

This graph steadily goes downhill as you read it from left to right. The x axis is time while the y axis is the number of individuals. As it goes downhill, the population decreases. This is likely an exponential decay function.

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.