No café de manhã de Débora são servidas duas jarras contendo massas iguais de leite , sendo una de leite gelado e a outra de leite quente Débora afirma que a jarra com leite gelado tem menos calor que a jarra com leite quente. ela diz também que a jarra com leite quente tem maior energia interna que a jarra com leite gelado. as afirmações de Débora estão corretas?

Yes  

Explanation:

The jar with cold milk is less hot than the jar with hot milk. The temperature of the milk is a measure of its "hotness".

You must add heat to cold milk to make it hot. The jug of hot milk has more internal energy than the jug of cold milk.

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.