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Washington State Math Olympiad
Hints and Solutions
2008 Grade 7 Algebra
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1) There is a population of 832 rabbits in the city of Lakewood. The population of rabbits doubled every six months. What was the population of rabbits 30 months ago?
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2) What is the next term in this sequence:
1, 2, 2, 4, 8, 32, 256, __ ?
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3) Study the sequence of shapes below built out of squares. How many squares would be in the 10th
term of the sequence?
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4) A ladybug is walking along the bottom edge of
a window frame. The y-axis shows distance
from the corner of the window frame in inches.
The x-axis shows time in seconds. How fast is
she walking?