Ineed with number 5 i really don't get it

In 1st year, $12000

In 2nd year, $12000 + (12000*40)/100 =$12000 + $4800=$16800.

ANSWER WOULD BE OPTION D.

Step-by-step explanation:

the 2nd line can be rewritten as y < x-3

So, any value that is less than both 4x+4 and x-3 will work

Pick any value you want for x, and figure y possibilities

x=0; x-3=-3, 4x+4=4, so y<-3 ... (0,-5) will work

I'm sure you can now come up with other pairs.