What is the volume of a hemisphere with a diameter of 57.2 in, rounded to the nearest tenth of a cubic inch?

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

Cameron indoor stadium at duke university is one of the most revered sites in all of college basketball, as well as in all of sports period. duke’s men’s and women’s basketball programs have attained quite a few wins in the building over the last seventy years. cameron indoor stadium is capable of seating 9,460 people. for each game, the amount of money that the duke blue devils’ athletic program brings in as revenue is a function of the number of people in attendance. if each ticket costs $45.50, find the domain and range of this function.

Is this a polynomial function? i need to know asap