Plz help me with this

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

This is about circle theorems. someone asap : (