Write the expression in the standard form a + bi.-9i(-7 + 4i)
A. 36 + 63i
B. -36 + 63i
C. 63i + 36i2
D. 63i - 36i2
Answer: A
Mathematics
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Divide numerator and denominator by the highest power of x in the denominator to find the limit.
A. -?
B. ?
C. 
D. 0
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Find the reciprocal.
A. 
has no reciprocal.
B. 
C. 4
D. -4
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Graph.y = x4 - 3
A. 
B. 
C. 
D. 
Mathematics
Round the whole number to the given place value.28,772, thousands
A. 30,000 B. 28,800 C. 29,000 D. 28,000
Mathematics