Multiply. Assume all variables represent nonnegative real numbers.
? 
A. 100
B. 20
C. 10
D. 200
Answer: C
Mathematics
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Identify the vertex of the quadratic equation.f(x) = x2 - 7
A. (0, -7) B. (7, 0) C. (1, 0) D. (0, 7)
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Find the axis of symmetry of the function.f(x) = 2x2 + 16x + 31
A. x = -4 B. x = 4 C. x = 1 D. x = -1
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Find the midpoint of the line segment joining the points P1 and P2.P1 = (0.8, -0.2); P2 = (2.8, -1.4)
A. (-0.6, 1) B. (1, -0.6) C. (1.8, -0.8) D. (-0.8, 1.8)
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Determine all possible rational solutions of the polynomial equation.f(x) = 6x3 + 24x2 + 2x - 3
A. ±1, ±3, ± 
B. ±1, ± 
, ±2, ± 
, ±3, ±6
C. ±1, ± 
, ±3, ± 
, ± 
D. ±1, ± 
, ±3, ± 
, ± 
, ± 
Mathematics