Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?
Ze trinomial x2 + bx โ c has factors of (x + m)(x โ n), where m, n, and b are positive. what is ze relationship between the values of m and n? explain how you got ze answer
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