If r(x)=5/x-7, find r(a+2) and write the answer as one fraction r(a+2)= simplify your answer)

r(a+2) = 5/ (a+2) - 7

= 5/ (a-5)

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.