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Key Concepts Section 1.5 Quiz
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Use the document below to help answer the questions:

1
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Alex rides his bicycle at 10 km/h on level roads, at 6 km/h when going uphill, and at 15 km/h when going downhill. He went on a bicycle trip, and returned following the same route, for a total riding time of 12 h. How far did he travel, round trip? Select appropriate tool(s) to help you solve this problem.
A)44 km
B)62 km
C)96 km
D)124 km
2
A number cube is made with faces marked 1, 3, 5, 7, 9, and 11. If two of these cubes are rolled, what is the probability of getting a sum of 16?
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A)1:6
B)1:9
C)1:12
D)1:36
3
Jay had a rectangular pool in his back yard, measuring 6 m by 8 m. He found the midpoint of each of the 4 sides, and joined the midpoints with floater line to make a diamond. What is the perimeter of the diamond?
A)20 m
B)24 m
C)32 m
D)40 m
4
Shawna had 12 Canadian coins in her pocket, no cents or loonies, when she left home, totaling $2.30. When she arrived at the grocery store, she pulled the coins out of her pocket, but dropped one on the floor. Which denomination of coin was most likely the one lost?
A)nickel
B)dime
C)quarter
D)toonie
5
A club has 350 members. The president is constructing a "telephone tree". She will call 3 members. Each of those will call 3 additional members, until all members have been contacted. How many "layers" are required to reach all 350 members, counting the president as the first layer?
A)4
B)5
C)6
D)7





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