Correct. Divide each term in the polynomial by the monomial.

$\displaystyle\frac{{{55}{{b}}^{{8}}}}{{{10}{{b}}^{{3}}}}-\frac{{{40}{{b}}^{{5}}}}{{{10}{{b}}^{{3}}}}-\frac{{{35}{b}}}{{{10}{{b}}^{{3}}}}=\frac{{{11}{{b}}^{{5}}}}{{{2}}}-{4}{{b}}^{{2}}-\frac{{{7}}}{{{2}{{b}}^{{2}}}}\usepackage{cmbright}\Huge\$

So 2 is the correct answer.