Find the variation equation for the variation statement.y varies directly as the square of x; y = 144 when x = 6
A. y = 36x
B. y = 24x
C. y = 144x
D. y = 4x2
Answer: D
Mathematics
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Add or subtract as indicated.(21x + 10xy - 11y) - (18x - 23xy - 17y)
A. 3x + 33xy + 6y B. 11x - 3xy + 28 C. 42xy D. 3x - 33xy - 28y
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Find the sum.41 + (-44)
A. -85 B. -3 C. 85 D. 3
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Simplify. Assume all variables are non-negative real numbers.
A. 4a2b 
B. -4a4b2 
C. 4 
D. 4ab 
Mathematics