Find zw or 
as specified. Leave your answer in polar form.z = 5(cos 200° + i sin 200°)w = 4(cos 50° + i sin 50°)Find 
.
A. 
(cos 40° + i sin 40°)
B. 
(cos 40° + i sin 40°)
C. 
(cos 150° + i sin 150°)
D. 
(cos 150° + i sin 150°)
Answer: D
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Solve the problem.In a regular polygon with n sides, if the distance from the center to the midpoint of a side is R and ? is the central angle subtended by one side, then the length of a side x is given by 
Solve for ?.
A. ? = cot-1 
B. ? = 2 tan-1 
C. ? = tan-1 
D. ? = 2 cot-1 
Solve.How many feet are represented by a 
in. line if it is drawn to a scale of 
in. = 1 ft?
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.In November, Steve uses his credit cards to buy $30.00 of holiday gifts each week. After 8 weeks he begins saving $30.00 each week to pay his credit card bill. Write an absolute-value function to represent the amount Steve has saved since he started buying holiday gifts. (Hint: Let purchases on credit cards represent negative savings.)
What will be an ideal response?
Estimate the product by first rounding the factors as indicated.104 × 399 (nearest hundred)
A. 400,000 B. 40,000 C. 300,000 D. 30,000