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Unformatted text preview: 5. c =1 2 003 10.0 points How many real roots does the equation x 5 + 2 x + 4 = 0 have? 1. exactly one real root 2. exactly Four real roots 3. exactly three real roots 4. exactly two real roots 5. no real roots 004 10.0 points Sarah is driving her car very smoothly From Austin to Dallas one day. At 9:00 pm she is travelling at 25 mph, while 30 minutes later she is travelling at 40 mph. Calculus tells us that at some time between 9:00 pm and and 9:30 pm her acceleration is exactly x mph/h. Determine x . 1. x = 30 mph/h 2. x = 28 mph/h 3. x = 26 mph/h 4. x = 34 mph/h 5. x = 32 mph/h...
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 Spring '10
 Gualdini

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