The answer is A,you can refer to the definition
Answer:
B
Step-by-step explanation:
It cannot be D, because it costs way more, it cannot be C because there are other options that provide better value. We can finally determine that it is B because for 3 pens more it is only 9 cents more
Answer:
-1/5+(√3)/20i or -0.2+0.05√3i
Step-by-step explanation:

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<em>Comment on answer form</em>
Satisfying the input format requirements of a computer is always problematic. One never knows if fractions or decimals are preferred, whether radicals must be simplified, and so on. If no clues are offered by general instructions, other questions, or previous experience, then it might be useful to consult your instructor.
Answer: 240 students
Explanation:
320 ÷ 8 = 40 (40 groups of 8)
40 x 6 = 240