A researcher studying a specific type of tree creates a least-squares regression line for relating the height and the diameter, both in meters, of a fully grown tree. Which of the following values represents the predicted change in height of the tree for each one meter increase in the diameter of the tree

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.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20