Solve the problem. Leave your answer in polar form.z = 10(cos 45° + i sin 45°)w = 5(cos 15° + i sin 15°)Find zw.
A. 50(cos 30° + i sin 30°)
B. 5(cos 30° + i sin 30°)
C. 5(cos 60° + i sin 60°)
D. 50(cos 60° + i sin 60°)
Answer: D
Mathematics
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Solve the problem.The Whitcher family learned that their investments decreased in value by 29% over the last year. If the investments were worth $84,000 at the beginning of the year, how much (in dollars) did they lose over the last year?
A. $2897 B. $2436 C. $244 D. $24,360
Mathematics
Graph the function.f(x) = 5-x
A. 
B. 
C. 
D. 
Mathematics
Find the product of the given complex number and its conjugate. Write the answer in the form a + bi.
- 2i
A. 
+ 4i
B. 
C. 
D. 
- 4i
Mathematics
Graph the system of inequalities.y > x25x + 6y ? 30
A. 
B. 
C. 
D. 
Mathematics