Ian's monthly allowance is $21. In January he starts saving for a birthday gift in June. Each month he saves of his allowance. T
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Answer:
Step-by-step explanation:
Given
Recursive:
Required
Determine the formula
Substitute 2 for n to determine
Substitute
Next is to determine the common difference, d;
The nth term of an arithmetic sequence is calculated as
Substitute and
Hence, the nth term of the sequence can be calculated using