8.At Quin's Grocery Store the demand for ground beef is 50 lbs per week when the price is $4 per lb, but is only 40 lbs per week when the price rises to $5.50 per lb. Find
the demand function and use it to predict the demand when the price rises to $5.80

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.