The length of a rectangle is 2cm more than its width. Calculate the perimeter of the rectangle when the width is 8cm.

How do the graphs of y = 1/x and y=5/x+6 compare?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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.