Find the product. Write the product in rectangular form, using exact values.[4(cos 210° + i sin 210°)] [5(cos 120° + i sin 120°)]
A. -10 - 10
i
B. -10
+ 10i
C. 10 + 10
i
D. 10
- 10i
Answer: D
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Describe the situation with a linear inequality and then solve the inequality.David has $13,000 to invest. He invests $8000 in a mutual fund that pays 12% annual simple interest. If he wants to make at least $2200 in yearly interest, at what minimum rate does the remainder of the money need to be invested?
A. 22.8% B. 24.8% C. 26.8% D. 23.8%
Write the interval as an inequality involving x. Graph the inequality.(2, 6)
A. 2 ? x ? 6
B. 2 < x ? 6
C. 2 < x < 6
D. 2 ? x < 6
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Two marbles are drawn from a bag in which there are 4 red marble and 2 blue marble. The number of blue marbles is counted.
A. 
B. 
C. 
D. 
Use the information given about the angle ? to find the exact value of the indicated trigonometric function.tan ? = 3, ? < ? < 
Find tan 
.
A. 
B. 
C. 
D. 