Simplify.-8(5x + 10y) + 4(2x + 7y)
A. -32x + 10y + 7
B. -120xy
C. -3x - 52y
D. -32x - 52y
Answer: D
Mathematics
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Find the sum of the geometric series for those x for which the series converges.
A. 
B. 
C. 
D. 
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Multiply the polynomials using a special product formula. Express the answer as a single polynomial in standard form.(x + 4)2
A. x2 + 16 B. 16x2 + 8x + 16 C. x + 16 D. x2 + 8x + 16
Mathematics
Which method should be used to solve the system? Explain your answer, including a description of the first step. x2 - 10y2 = 16-8x2 + 7y2 = 4
What will be an ideal response?
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Find the given value.Find (f ? g)(4) when f(x) = x - 2 and g(x) = -4x2 + 12x - 4.
A. -40 B. -120 C. 120 D. -408
Mathematics