Copy of Copy of Arithmetic sequence calculator

[b]Arithmetic sequences calculator[/b]
Welcome to the Class! From Maam Cindy Gardose
Direction: Study the step and using the formula for the arithmetic sequence.
Formula of the Arithmetic Sequence
[math]An=a_1+\left(n-1\right)d[/math]
Given the sequence, 12,9,6,3..... Find the 20th term
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– Ronan Downes, Cindy Callora Gardose, Mathguru, fglynn

Information: Copy of Copy of Arithmetic sequence calculator