PLS HELP! will give 3 free brainliests if right

1 to 4

Step-by-step explanation:

Given function:

as you can see, everytime it goes up, it multiply by 4...this means that 1 dollar=4 phone book...

Divide both digit by highest factor:

Therefore, for every dollar, Sammy can get 4 phone books.

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.