Please help! Express cos D as a fraction in simplest terms.

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

Can someone me out here and the tell me the greatest common factor

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document