Which software would you use?

I need to type a letter to tell parents about a sponge throwing competition at school, what software do I use?

I need to store all the information about students at HPA. What software should I use?

I need to figure out how much my friends birthday party costs.

I need to create a poster to tell everyone about my charity event in school.

I would like to create an advert to go on TV.

I am the Headteacher of HPA and would like to inform parents about the great activities happening next year.

I would like to create a logo for my business.

I need to make a graph to show how much I sold in my shop.