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Unformatted text preview: over a period of time  increases with the number of people who have heard it. If y is the number of people who have heard the rumor, then dy dt = ky, where t is the time in days. a. If y is 1 when t = 0 and y is 5 when t = 2 , nd k . b. Using the value of k from (a), nd y when t = 3 . 5. Prove or disprove: a. x2 3 x grows slower than x 2 x . b. log 2 3 x 2 grows at the same rate as ( x + 7) 2 . 1...
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 Spring '07
 BERMAN
 Math, Calculus

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