Regression Models Answers
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Marta’s mother shared a funny video of their cat on the Internet. The total number of people who had viewed the video over the first 30 days could be modeled using the function f(x) = 33(1.3)x where x is the number of days the video has been online.
A
190B
858C
6,271D
86,4602
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The table compares x, the number of minutes of television Sam watched each day, to y, the number of minutes she spent exercising. The function y = –0.78x + 95 models the data in the table.
A
45 minutesB
72 minutesC
83 minutesD
118 minutes3
The data in the table represents a company’s profit based on the number of items produced.
A
y = –1.026x2 + 1016.402x – 162075B
y = –1.036x2 + 1024.771x – 163710C
y = 298.214x – 66317.667D
y = 196.2x – 187104
The table shows the relationship between time spent running and distance traveled.
A
linear, because the r value for the linear model is closest to 1B
exponential, because the r value for the exponential model is closest to 0C
linear, because the rate of change between each pair of points is exactly 520D
exponential, because the rate of change between each pair of points is 1.985
Janna is making a prediction of the frequency of a key that is 12 keys from middle C.
A
interpolation, because a key that is 12 keys from middle C is within the data setB
interpolation, because a key that is 12 keys from middle C is outside the data setC
extrapolation, because a key that is 12 keys from middle C is within the data setD
extrapolation, because a key that is 12 keys from middle C is outside the data setDid you find these answers helpful?
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