Geometric Sequences — Unit test Answers
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1
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Which is the graph of ?
A
OptionB
OptionC
OptionD
Option2
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Which graph is the sequence defined by the function f(x) = 3(2)x-1?
A
On a coordinate plane, 5 points are plotted. The points are (0, 2), (1, 6), (2, 18), (3, 54), (4, 162).
B
On a coordinate plane, 5 points are plotted. The points are (1, 2), (2, 6), (3, 18), (4, 54), (5, 162).
C
On a coordinate plane, 6 points are plotted. The points are (0, 3), (1, 6), (2, 12), (3, 24), (4, 48), (5, 96).
D
On a coordinate plane, 5 points are plotted. The points are (1, 3), (2, 6), (3, 12), (4, 24), (5, 48).
3
Yui makes a list of the balances in her savings account at the end of each month. She notices that each month’s total is 5% greater than the previous month’s total. She writes a recursive formula to describe the account balances.
A
0.05B
0.5C
1.05D
5.04
Which is the graph of f(x) = (4)x?
A
OptionB
OptionC
OptionD
Option5
1.2, 3, 7.5, 18.75, ...
A
f(x) = 1.2(2.5)x – 1B
f(x) = 2.5(1.2)x – 1C
f(x) = 1.2(2.5)xD
f(x) = 2.5(1.2)x6
What is the common ratio of the sequence?-2, 6, -18, 54,...
A
−3B
−2C
3D
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