The amount of students that had more than 6 candy bars.
Arithmetic sequence
Explanation
An arithmetic sequence is a list of numbers with a definite pattern. If you take any number in the sequence then subtract it by the previous one, and the result is always the same or constant then it is an arithmetic sequence
Step 1
Let


so, the difference is always the same, 2
Hence, the answer is a Arithmetic sequence
The 1st integer is:x=13
The 2nd integer is:x+1=13+1=14
The 3rd integer is: x+2=13+2=15
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Check, does 13+14+15=42?