Use a power regression model for the following data to estimate 
. Round your answer to two decimal places.
x 1 3 4 7 8 y 4.67 14.34 20.94 41.18 45.49?
A. 18.79
B. 19.31
C. 80.46
D. 78.82
Answer: D
Mathematics
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A. y(y4 + y2) B. y3(y2 + y) C. y3(y2 + 1) D. y5 (y + 1)
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Find the domain of the function.f(x) = 7x + 5
A. (-5, ?) B. (-?, ?) C. (-?, -5) or (-5, ?) D. (-?, 0) or (0, ?)
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Solve the equation.
= 
A. 
B. 
C. 
D. 
Mathematics