Perform the indicated operations. Write the resulting polynomial in standard form.(4x + 9)(-2x + 4)
A. 2x2 - 2x + 36
B. -8x2 - 2x + 36
C. -8x2 - 2x - 2
D. 2x2 - 2x - 2
Answer: B
Mathematics
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Evaluate.
A. 35
B. 280
C. 70
D. 
Mathematics
Write as a logarithm of a single expression.2 log7 2 + 
log7 (r - 4) - 
log7 r
A. log7 
B. log7 
C. log7 
D. log7 
Mathematics
Determine the constant of variation for the stated condition.t varies jointly as r and s, and t = 432 when r = 12 and s = 12.
A. k = 
B. k = 3
C. k = 
D. k = 4
Mathematics
Solve, finding all solutions in [0, 2?).2 sin x cos x + cos x = 0
A. No solution
B. 
, 
, 
, 
C. 
, 
, 
, 1
D. 
, 
, 
, 
Mathematics