Answer
$87$
Work Step by Step
The common difference $d$ of the given arithmetic sequence is:
$$d=23-15=8$$
Thus, to find the tenth term, just keep on adding $8$ to get the next term until you reach the tenth term:
$$15, 23, 31, 39, 47, 55, 63, 71, 79, 87, ...$$
Therefore, the tenth term is $87$.
