Sara says if you subtract 17 from my number and multiply the difference by -7 you get -140. What is Sara's number?

(x-17)*(-7)=-140

-7x*98=-140

-7x=140/49= 20/7

x= -20/49

Step-by-step explanation:

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.