Write the complex number in rectangular form.4(cos (-135°) + i sin (-135°))
A. -2
- 2
i
B. -
+ 
i
C. -
- 
i
D. -2
+ 2
i
Answer: A
Mathematics
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Solve the problem.The area A = ?r2 of a circular oil spill changes with the radius. At what rate does the area change with respect to the radius when 
A. 8? ft2/ft B. 16? ft2/ft C. 8 ft2/ft D. 4? ft2/ft
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Sketch the graph of the function and find the domain and range.f(x) = 2(x + 1)2 - 3
A. domain: all real numbers
range: y ? -3
B. domain: all real numbers
range: y ? -3
C. domain: all real numbers
range: y ? -3
D. domain: all real numbers
range: y ? 1
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Solve the inequality and graph the solution.-4 < 
A. x < -12
B. x > -12
C. x ? -12
D. x ? -12
Mathematics
Solve the inequality. Express your answer using interval notation.x + 1 < -2
A. (-?, -3)
B. (-?, -3]
C. (-?, -1)
D. (-3, ?)
Mathematics