Let be a periodic function whose values are given below. Find the period, amplitude, and midline.
x
5
25
45
65
85
105
125
145
165
f(x)
17
15
-3
17
15
-3
17
15
-3
(a) The period of the graph is
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(b) The midline of the graph is
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(c) The amplitude of the graph is
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