Im too tired for this please help me.

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

Find the roots of the equation below. x^2 - 6 + 9 = 0

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?