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Need on this geometry question. explain how you did it.

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?

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?