Hey uh this is the last question for the night, can anyone pls solve this, if so then thank you :). Also pls explain. I'll also try to give Brainliest to the first person who helps me. Hopefully someone helps me xD

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.