Factor the trinormial S^2+8s+7

Multiplying an even number of negative numbers gives an answer that is choose from:

Which statement about perfect cubes is true

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?