Can anyone help me im stuck on question 1-6

What is the measure of ac? 5 units 13 units 26 units 39 units

In a school 2/3 of the students study a language of those who study a language 2/5 study french

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