I need help with this very confusing

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Place me with this question is my last question

What is the mass of the water that is being heated? it requires 2,500 joules to raise a certain amount of water (c = 4.186 jig c) from 20.0°c to 60.0°c. o 159 o 40 g o 63 g o 80 g