Question

What’s the answer to this

Answer 1

`a_(n)` = 0.5n + 1.2

Explanation:

The formula for the n th term of an arithmetic sequence is

`a_(n)` = a₁ + (n - 1)d

where a₁ is the first term and d the common difference.

Here a₁ = 1.7 and d = 0.5, thus

`a_(n)` = 1.7 + 0.5(n - 1) = 1.7 + 0.5n - 0.5 = 0.5n + 1.2