Answer:
The constraints are
[tex]9x+12y\leq 180[/tex]
[tex]y\geq 6[/tex]
[tex]y\geq x[/tex]
[tex]x \geq 0[/tex]
Step-by-step explanation:
Let
x------> the number of visors
y------> the number of caps
we know that
[tex]9x+12y\leq 180[/tex] ----> inequality A
[tex]y\geq 6[/tex] -----> inequality B
[tex]y\geq x[/tex] ----> inequality C
[tex]x \geq 0[/tex] -----> inequality D (the number of caps can not be negative)
using a graphing tool
The solution is the shaded area
see the attached figure