Write the expression in the standard form a + bi.-6i(-3 + 9i)
A. 54 + 18i
B. 18i - 54i2
C. 18i + 54i2
D. -54 + 18i
Answer: A
Mathematics
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Find the limit if it exists.
(x + 1)2(x - 3)3
A. -1 B. 125 C. -9 D. 1125
Mathematics
Simplify the expression.12x + 12 - 28x - 4
A. 40x + 16 B. -16x + 12 - 4 C. 16x + 8 D. -16x + 8
Mathematics
Solve.- 
r = 2
A. -1 B. -10 C. -3 D. -4
Mathematics
Solve the inequality and graph. Express your answer in interval notation.-3(3x - 2) < -12x - 21
A. (-9, ?)
B. [-9, ?)
C. (-?, -9]
D. (-?, -9)
Mathematics