Which statement must be true?

a. a statement cannot become a theorem

b. a statement cannot become a proof until it's a theorem

c. a statement cannot become a postulate until its proven

d. a statement cannot become a theorem until it becomes a postulate

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?