Answer
The answer and procedures of the exercise are attached in the following archives.
Explanation
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Answer: Histogram
You can eliminate the stem and leaf plot, since it tells you the amount of values.
You can eliminate the dot plot, since it also shows you the number of values.
You can eliminate the frequency table, since it calculates the frequency of a number.
Thus, the answer is the histogram.
Answer:
61
Step-by-step explanation:
Put 12 where n is, then do the arithmetic.
a(12) = -5 +6(12-1) = 61
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We assume you didn't really mean to show an equation for -a(n). If you did, then the term you want is -61.