Counting Principle: A student number system for a county requires
that the student number be 4 characters.
The first 3 characters are any single digit number,
and cannot repeat, and the last character must be a
letter. How many unique student numbers are
possible?

a. 260,000
b. 18,720
c. 131,040
d. 315,160

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.

(3x-8) or (3x+8)

step-by-step explanation:

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100