Expand, where i2 = -1.(-1 + i
)3
A. -1 - 3i
B. 8
C. 4 + 4i
D. 1
Answer: B
Mathematics
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Solve for the indicated variable.Solve r = 
for ?.
A. ? = 2Ar2
B. ? = 
C. ? = 
D. ? = 
Mathematics
Find the angle between v and w. Round your answer to one decimal place, if necessary.v = -2i,
w = j
A. 270° B. 90° C. 180° D. 0°
Mathematics
Simplify.-(-(-9))
A. -9 B. -1 C. 1 D. 9
Mathematics
Solve.Margaret takes out a loan on a fixer-upper house. She then spends $3982 in repairs and improvements. She sells the house for $84,540. If the pay-off for the loan that she took out to buy the house is $70,616, what is her net? Is it profit or loss?
A. $9942, profit B. $17,906, profit C. -$17,906, loss D. $159,138, profit
Mathematics