Find the degree of $3x$.

Find the degree of the following polynomial

$5x^2+3x+4$

State the degree of the polynomial, $3x+5y$.

Find the degree of $5xy+3$.

Find the degree of the polynomial  $x^6+x^4{y}^2+x{y}^4+y^3$.

Find the degree of polynomial $8a^3+3ab-6a^{4}b+4b$. (Write the answer in number)

Find the degree of the polynomial $3x^3+x^{2}y+y^3$.