Identify the open intervals where the function 
is increasing or decreasing.
?
A. decreasing: 
; increasing: 
B. increasing:
; decreasing:
C. increasing on 
D. decreasing on
E. none of the above
Answer: A
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Perform the indicated operation.[(1.8x3 + 7.6x2 + 4.1) + (6.5x - 2.9)] - (3.7x2 -x - 9.5)
A. 1.8x3 + 3.9x2 + 7.5x + 10.7 B. 1.8x3 + 3.9x2 + 6.5x + 10.7 C. 1.8x3 + 11.3x2 + 5.5x - 8.3 D. 13.2x6 + 10.7
Find the linear function that is the best fit for the given data. Round decimal values to the nearest hundredth, if necessary.
A. y = 0.95x + 11.8 B. y = 1.05x - 11.8 C. y = 0.95x - 11.8 D. y = 1.05x + 11.8
Divide.(x5y3 - x3y2 - x2y) ÷ (x2y)
A. x3y3 - xy - y B. x3y2 - xy2 - y C. x3y2 - xy - 1 D. x3y3 - xy2 - 1
Solve the system by the elimination method or a combination of the elimination and substitution methods.x2 + 4xy + 2y2 = 1 x2 - 4xy - 2y2 = 1
A. {(1, 0), (1, 1)} B. {(1, -2), (-1, 2)} C. {(1, 1), (-1, -1), (1, -2), (-1, 2)} D. {(1, 0), (-1, 0), (1, -2), (-1, 2)}