I don't have a calculator with me, but that should get you going
The number of adults at the middle school dance is equal to the number of students
2 answers:
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Let = -9,
= -12 and so on.
-15 = -9 + (-6)
-15 = -9 + 2(-3)
Let -3 be the common difference, or <em>d</em>.
= -9 + n(-3)
= -9 - 3n
I graphed it on desmos, hope this helps a little :)
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NicoleGolfLover
