In terms of f, what is the mean of f?1,f+2,f?6,f?5, and f+15?...
MATHEMATICS
SAT 2021
In terms of f, what is the mean of f?1,f+2,f?6,f?5, and f+15?
- A. f+5
- B. f+1
- C. f?1
- D. 2f?1
Correct Answer: B. f+1
Explanation
Recall how to find the mean: Mean/Average=Sum of all valuesNumber of values Mean=((f?1)+(f+2)+(f?6)+(f?5)+(f+15)5=5f+5)/5=f+1
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