Agood security awareness program makes employees aware of the behaviors expected of them. all security awareness programs have two enforcement components: the carrot and the stick. which of the following best captures the relationship of the two components?

First task:
to determine this we need to make difference between system that doesn't have solution and system that has infinite number of solution. if when solving equations we get   0 = 0 that means system has infinite number of equations.
if we get 0 = some number that means that system doesn't have solution.

multiplying first equation of second system by 2 and adding it to second equation we get 0=0 which means that this system has infinite number of solutions.

answer is second system

second task:
for this we need to set a system of equations and solve it. system looks like this:
x + y = 224
x*12 + y*8=2520

x represents older than 18 and "y" 18 and younger than that.
first equation we multiply with -12 and sum it with second.
-4y = -168
y=168/4 = 42

answer is 42.

2x + 4y = 18
4x - 8y = -36

this system has infinite solutions as one equation is a factor of the other
 
for the second we can check that 
a number of visitors  older  than 18
b number of visitors   younger than 18

a(12) +b(8) = 2520
a + b = 224

solving the equation system we have 
that 182 visitors were 18 or younger