Four students wrote sequences in math class. Angela negative 6 comma negative 9 comma negative 12 comma negative 15 comma dot dot dot Bradley negative 2 comma negative 6 comma negative 12 comma negative 24 comma dot dot dot Carter negative 1 comma negative 3 comma negative 9 comma negative 27 comma dot dot dot Dominique negative 1 comma negative 3 comma negative 9 comma negative 81 comma dot dot dot Which student wrote a geometric sequence?
A geometric sequence has the same ratio between each pair of consecutive terms. For Carter’s sequence, each term is multiplied by 3: −1 × 3 = −3, −3 × 3 = −9, and −9 × 3 = −27. So Carter wrote the geometric sequence.
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