aisha hiked each day for a week. the first day she hiked 1/6 mile, the second day she hiked 1/2 mile, and the third day she hiked 5/6 mile. by how much did she increase the distance she hiked each day?

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.