Unit Test — Unit test Answers
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21
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Which formula can be used to describe the sequence?, −4, −24, −144,...
A
f(x) = 6
B
f(x) = −6
C
f(x) = (6)x − 1
D
f(x) = (−6)x − 1
22
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Which equation represents an exponential function that passes through the point (2, 36)?
A
f(x) = 4(3)xB
f(x) = 4(x)3C
f(x) = 6(3)xD
f(x) = 6(x)323
Two exponential functions are shown in the table.
A
The functions f(x) and g(x) are reflections over the x-axis.B
The functions f(x) and g(x) are reflections over the y-axis.C
The function f(x) is a decreasing function, and g(x) is an increasing function.D
The function f(x) has a greater initial value than g(x).24
Which is the graph of f(x) = 100(0.7)x?
A
On a coordinate plane, a curve approaches y = 0 in quadrant 1 and curves up into quadrant 2. It goes through (2, 49) and (0, 100).
B
On a coordinate plane, a curve approaches y = 0 in quadrant 1 and curves up into quadrant 2. It goes through (2, 9) and (0, 100).
C
On a coordinate plane, a curve approaches y = 0 in quadrant 1 and curves up into quadrant 2. It goes through (2, 70) and (0, 100).
D
On a coordinate plane, a curve approaches y = 0 in quadrant 1 and curves up into quadrant 2. It goes through (2, 30) and (0, 100).
25
Which graph represents a geometric sequence?
A
On a coordinate plane, 5 points are plotted. The points are (1, 1), (2, 3), (3, 5), (4, 7), (5, 9).
B
On a coordinate plane, 4 points are plotted. The points are (1, 1), (2, 2), (3, 4), (4, 8).
C
On a coordinate plane, 3 points are plotted. The points are (1, 2), (4, 4), (9, 6).
D
On a coordinate plane, 3 points are plotted. The points are (1, 1), (2, 4), (3, 9).
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