Question

what is the recursive definition and explicit formula of the sequence 3, 5.5, 8, 10.5, 13, 15.5? I know the pattern is +2.5 ​

Answer 1

Answer:

$a_{n}$ = $a_{n-1}$ + 2.5

Step-by-step explanation:

This is an arithmetic sequence with common difference d = 2.5

The recursive formula allows any term in the sequence to be found by adding d to the previous term, thus

$a_{n}$ = $a_{n-1}$ + 2.5 ← recursive formula with a₁ = 3