Can you find the first 5 terms and the explicit formula

Remember that the explicit formula for an arithmetic sequence is: 

where
is the nth term
is the first term 
is the position of the term in the sequence
is the common difference

We know from our problem that   and , so lets replace those vales in our formula:



Now that we have the explicit formula for our sequence we can find its first 5 terms:






We can conclude that the first five terms of our arithmetic are: 7,14,21,28,35, and its explicit formula is