Which function represents the sequence –7.25, –6.75, –6.25, –5.75, … ? A. B. C. D.
2 answers:
Answer: 
Explanation: Let's form the arithmetic progression. For the sequence, not the sum, we use this form:
, a is the first term and d is the common difference.
Now each term goes up by 0.5, so d is 0.5
Substituting everything in, we get:
and we can verify this is true if we substitute n = 2, for -6.75 and so on.
Explanation: Let's form the arithmetic progression. For the sequence, not the sum, we use this form:
Now each term goes up by 0.5, so d is 0.5
Substituting everything in, we get:
and we can verify this is true if we substitute n = 2, for -6.75 and so on.
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