What pair of angles are supplementary?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

How does reflecting or rotating a figure change the interior angles of the figure?

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.