Help and the question changes when its wrong

Your answer is : 4x + 2h + 7

3x+9+4x+x=8x+9that's the answer for your question.

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?