Simplify.4m + 8n - 4m + 9(m - 7n)
A. 17m + 71n
B. 9m + 1n
C. 9m - 55n
D. -9m + 71n
Answer: C
Mathematics
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Graph the system of inequalities. Find the coordinates of the vertices.6y - x ? 8,-y + 3x ? 6,x ? 0
A. 
, (0, 6) , (0, 2)
B. 
C. 
, (0, 2) , (-8, 0)
D. 
, (0, -6)
Mathematics
Factor the sum or difference of two cubes completely.56t3 - 7
A. 7(2t - 7)(4t2 + 14t + 7) B. 7(2t - 1)(4t2 + 2t + 1) C. 7(2t - 1)(4t2 - 2t + 1) D. 7(2t + 1)(4t2 - 2t + 1)
Mathematics
Solve the equation.8p = 7(4p + 7)
A. p = 
B. p = 
C. p = - 
D. p = 
Mathematics
Find the exact value of y, or state that y is undefined.y = sin-1 
A. 
B. 
C. - 
D. 
Mathematics