Pls help me with this problem

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

What is coefficient of the term of degree of degree 5 in the polynomial below

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.