Final answer:
The arithmetic sequence can be represented in standard form as -14 + (n-1)(-7).
Step-by-step explanation:
An arithmetic sequence is a sequence of numbers in which the difference between any two consecutive terms is constant. In this case, the common difference is -7, because each term is obtained by subtracting 7 from the previous term.
The standard form of an arithmetic sequence is: a + (n-1)d, where a is the first term, n is the position of the term, and d is the common difference.
Using the given information, the arithmetic sequence can be represented in standard form as: -14 + (n-1)(-7).