Write the complex number in rectangular form.-5(cos 120° + i sin 120°)
A. 
+ 
i
B. - 
+ 
i
C. - 
+ 
i
D. 
+ 
i
Answer: A
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Solve the problem.Find the inflection points (if any) on the graph of the function and the coordinates of the points on the graph where the function has a local maximum or local minimum value. Then graph the function in a region large enough to show all these points simultaneously. Add to your picture the graphs of the function's first and second derivatives.y = x3 - 15x2
What will be an ideal response?
Find the exact value of the expression or state that it does not exist.cos
A. - 
B. - 
C. 
D. 
Solve the problem.During the first four months of the year, Jack earned 
and 
If Jack must have an average salary of at least 
in order to earn retirement benefits, what must Jack earn in the fifth month in order to qualify
for benefits? A. at least $1040 B. at most $1215 C. at least $1208 D. at most $1180
Divide and express the result in standard form.
A. 
+ 
i
B. 
- 
i
C. 
+ 
i
D. 
+ 
i