Determine whether the expression is a polynomial. if it is a polynomial, state the degree of the polynomial.
x^3-9
a. yes, 3
b. yes, 1
c. yes, 2
d. no, it is not a polynomial

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

Acylinder has volume 45π and radius 3. what is it’s height?

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1