Combine like terms when possible. -9xy2 - 3x2y
A. 27xy2
B. -12x2y
C. -12xy2
D. Cannot be simplified
Answer: D
Mathematics
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Solve the equation.0.4(x + 80) + 0.46(x + 15) = -42.8
A. {95} B. {65} C. {-65} D. {-95}
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Find the derivative.f(x) = 8x - 1
A. f'(x) = 0 B. f'(x) = 7 C. f'(x) = 8 D. f'(x) = 8x
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Which of the following is the graph of f(x) = x4 - 9?
A. 
B. 
C. 
D. 
Mathematics
Decide whether the ordered pair is a solution of the system of equations.
; (3, 6)
A. Yes B. No
Mathematics