Abridge is built in the shape of a semielliptical arch. it has a span of 104 feet. the height of the arch 25 feet from the center is to be 9 feet. find the height of the arch at its center.

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?