Expand, where i2 = -1.(1 + 3i)3
A. 28 + 36i
B. 36 + 28i
C. -18 - 26i
D. -26 - 18i
Answer: D
Mathematics
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Simplify.i24
A. -1 B. i C. 1 D. -i
Mathematics
The growth of a town's population is modeled by 
. How large will the population be when 
?
? Please enter your answer as a number without the units, rounded to the nearest integer. Fill in the blank(s) with the appropriate word(s).
Mathematics
Graph the equation.x2 = -9y
A. 
B. 
C. 
D. 
Mathematics
Solve the equation by completing the square.x2 + x + 4 = 0
A. 4, -4 B. 1, 4 C. 0, 4 D. No real solution
Mathematics