Write the degree of the following polynomial:
$7 x^{3}-9 x^{2}+4 x-22$

(3) The degree of a polynomial is defined as the highest power of the variable present in the polynomial.
In the given polynomial $7 x^{3}-9 x^{2}+4 x-22$,the powers of the variable $x$ are $3, 2, 1,$ and $0$ (for the constant term).
The highest power among these is $3$.
Therefore,the degree of the polynomial is $3$.