Write the explicit formula for the arithmetic sequence.
3, -3, -9, -15, -21, ...
no pictures please because my school blocked me from seeing them
A) an = 7 - 4n
B) an = 6 - 3n
C) an = 9 - 6n
D) an = 18 - 15n
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Answer:
Step-by-step explanation:4,
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3+(-3)+(-9)+(-15)+(-21)
=3-3-9-15-21
=-9-15-21
=9+15-21
=24-21
=3
=3-3-9-15-21
=-9-15-21
=9+15-21
=24-21
=3
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