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Unformatted text preview: NOTE: Write your answer as an integer or fraction. 3) The number of long distance phone calls between two cities in a certain time period varies jointly as the populations of the cities, p 1 and p 2 , and inversely as the distance between them. If 90,000 calls are made between cities 400 miles apart, with populations of 120,000 and 70,000, how many call are made between cities with populations of 85,000 and 65,000 that are 250 miles apart? NOTE: When finding the constant of proportionality, k , round k to four decimal places and use this rounded value of k to calculate your final answer....
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 Summer '09

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