Can someone please help it’s for dance class not mathematics

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

How many 2/5s are in 1 and 1/2 plz someone me right now

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?