Find the first four terms of the binomial series for the given function.(1 + 2x2)3
A. 1 + 6x2 + 20x4 + 56x6
B. 1 + 6x2 + 18x4 + 54x6
C. 1 + 6x2 + 6x4 + x6
D. 1 + 6x2 + 12x4 + 8x6
Answer: D
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Find the reference angle for the given angle.39°
A. 39° B. 51° C. 129° D. 141°
Find the quotient and write in rectangular form. First convert the numerator and denominator to trigonometric form.
A. 
+ 
i
B. 
+ 
i
C. 8 + 8
i
D. 1 + 
i
Solve the problem.An appliance store sells two types of refrigerators. Each Cool-It refrigerator sells for $640 and each Polar sells for $740. Up to 270 refrigerators can be stored in the warehouse and new refrigerators are delivered only once a month. It is known that customers will buy at least 70 Cool-Its and at least 110 Polars each month. How many of each brand should the store stock and sell each month to maximize revenues?
A. 160 Cool-Its and 110 Polars B. 230 Cool-Its and 155 Polars C. 85 Cool-Its and 185 Polars D. 70 Cool-Its and 200 Polars
Find the indicated probability.A card is drawn from a well-shuffled deck of 52 cards. What is the probability of obtaining a diamond or a card smaller than 5? [Assume that ace is low]
A. 
B. 
C. 
D. 