How do you solve this equation

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

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.

Determine domain and range, largest open interval, and intervals which function is continuous.