The expressions given in the table can all be simplified. When simplified, three of the expressions in Column A are equivalent to three of the expressions in Column B. Column A
Column B
I.
2x + 13-7x
V.
13 + 7x + 2x
II. 7x-17 + 4x
VI.
17-4x - 7
III. 7x +13 + 2x
VII. 13-7x + 2x
VIII. 4x + 7x - 17
IV. 4x - 7+17
Which pair of expressions is not equivalent?
land VII
ll and VIII
Ill and V
IV and VI

Step-by-step explanation:

after simplifying they look like

I) -5x + 13

II) 11x - 17

III) 9x + 13

IV) 4x + 10

V) 9x + 13

VI) -4x + 10

VII) -5x + 13

VIII) 11x - 17

so, clearly, IV and VI are not the same (equivalent).

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.