Zeke is racing his little brother niko. they are running a total of 30 yards and zeke gives niko a 12 yard head start. zeke runs 2 yards every second but niko only runs 1 yard every 2 seconds. if x represents the number of seconds they have been racing and y represents the distance from the start line then:

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.