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pls perfect answer If the weather is good, which happens with probability 0.7, Jessica walks the 2.5 miles to class at a speed of 5mi/hr,

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If the weather is good, which happens with probability 0.7, Jessica walks the 2.5 miles to class at a speed of 5mi/hr, otherwise she rides a bus at a speed of 35mi/hr. What is the expected time to get to class? (Give your answer to two decimal places)

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