The number of bottles of whiskey that a store will sell in a month at a price of p dollars per bottle is approximated by N(p)=2250/p+7 5.

The number of bottles of whiskey that a store will sell in a month at a price of p dollars per bottle is approximated by N(p)=2250/p+7 ≥ 5. Find the rate of change of this quantity when the price is $8. Interpret your answer. Show all work.