To determine the type of sequence formed by the number of pages Tisha read over the four days, we can analyze the differences between the consecutive terms.
- Pages read on Wednesday: 54
- Pages read on Thursday: 61
- Pages read on Friday: 68
- Pages read on Saturday: 75
Now, let's find the differences between consecutive terms:
- From Wednesday to Thursday: \( 61 - 54 = 7 \)
- From Thursday to Friday: \( 68 - 61 = 7 \)
- From Friday to Saturday: \( 75 - 68 = 7 \)
The difference between each term is constant (7 pages). This indicates that this sequence is an arithmetic sequence.
In an arithmetic sequence, the difference between consecutive terms is constant. A geometric sequence, on the other hand, has a constant ratio between consecutive terms, which is not applicable here since the differences are constant and the ratios are not.
Therefore, the answer is: A) arithmetic.
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