Help. I don't understand..

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

X2 + y 2 = 36 x + y = 6 solve the system of equations.

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?