Asingle standard number cube is tossed. what is the probality of getting a 4 or 5?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Areal estate agent earns $32,000 a year plus $1,000 for each apartment he sells. write an equation that shows the relationship between the number of apartments abe sells, n, and the total amount he earns in a year, e. what is the total amount abe would earn from selling 10 apartments in one year

How to do this , and can some one explain