Determine the degree of each polynomial.
$15q-21p^3$

Determine the degree of each term.

$y^5$

Determine the degree of each term.

$3b$

Determine the degree of each term.

$-6$

Determine the degree of each term.

$8p^4{q}^3$

Determine the degree of each polynomial.

$-x^4+2x^3-5x^5-8x$

Determine the degree of each polynomial.

$-3x^2-5x^2{y}^2+y^3$

Determine the degree of each polynomial.

$a^2+2ab+b^2$