Use a power regression model for the following data to answer the following question. If x is multiplied by 4, what is the effect on y?
x 1 3 4 7 8 y 13.01 2.72 2.43 1.49 1.17?
A. y is multiplied by 2.47.
B. y is multiplied by 2.71.
C. y is multiplied by 2.37.
D. y is unchanged.
Answer: D
Mathematics
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Simplify.(a-3)-6
A. a18
B. a3
C. 
D. 
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Factor by any method.15x10 + 18x5y4 + 20x5y4 + 24y8
A. (3x5 - 4y4)(5x5 - 6y4) B. (3x5 + 4y4)(5x5 + 6y4) C. (15x5 + 4y4)(x5 + 6y4) D. (3x5 + 4y)(5x5 + 6y8)
Mathematics
Find the inverse of the matrix, if possible.A = 
A. 
B. 
C. 
D. 
Mathematics
Solve the special system by elimination. If the system is dependent, write the solution using set-builder notation with the common line expressed in slope-intercept form.
A. 
B. (0, 0)
C. 
D. ?
Mathematics