Answer:
Increase Percentage =
Percentage increase in hairlength = 72%
Select the correct answer.
2 answers:
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To solve this problem, we need to know the formula for the nth term of an arithmetic sequence. The formula is 
= t₁ + (n-1)d, with being the nth term, t₁ being the first term, and d being the distance between terms. Now we can substitute values to figure out what is. When substituting, the equation becomes:
= 12 + 29(-6)
= -162
That means that the 30th term in this arithmetic sequence is -162.
That means that the 30th term in this arithmetic sequence is -162.