Idon't know how to do these i have to turn this in

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

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?

Could someone me with this question i’ve been stuck on it for 20 minutes