I need #3 and 4, please! Also please no links let someone else who can actually answer it, answer it. Thank you.

Find the vertex of the function given below y=x^2-6x+1

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

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?