5c + 3 -2c + 5 simplify the expression

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Identify the number as a rational or irrational. explain. 127

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.