The population of a colony of mosquitoes obeys the law of uninhibited growth. If there are 1000 mosquitoes initially and there are 1300 after 1 day, what is the size of the colony after 4 days? How long is it until there are 30,000 mosquitoes? The size of the colony after 4 days is approximately mosquitoes. (Do not round until the final answer. Then round to the nearest whole number as needed.)

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