What is the degree of the polynomial?5y^4 - 2y^6 + y^5 -9A. 6B. -2C. -9D. 5

The degree of a polynomial is given by the greater number in the exponent
in this case, we have
[tex]y^4,y^6,y^5[/tex]The greater exponent is 6, so the degree of the polynomial is 6