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Carl Horowitz
Carl Horowitz
University of Michigan
Runs his own tutoring company
Carl taught upperlevel math in several schools and currently runs his own tutoring company. He bets that no one can beat his love for intensive outdoor activities!
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Concept (1)
Sample Problems (2)
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Direct Variation
Problem 1 3,821 viewsy varies directly as the cube of x.
If y = 32 when x = 2, find y when x = 3. 
Direct Variation
Problem 2 2,999 viewsA ball is dropped from the top of a building. The distance the ball falls is directly proportional to the square of the time it has been falling.
If a ball falls 48 feet in 2 seconds, find how far it has fallen after 6 seconds.
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