The demand function for a product is given by $\displaystyle {p}{\left({n}\right)}={440}-{0.8}{n}^{{2}}$, where $\displaystyle {p}$ is the price in dollars and $\displaystyle {n}$ is the quantity in thousands. If adverse weather conditions are driving the price up by $8 per week, find the rate at which the demand quantity for the product is changing when the price is $120.

The demand for this product is Select an answer rising falling by Preview Question 6 Part 2 of 2   thousand items per week.