Answer:
Each slash represents a separation of the lines
1 / 2 / 3 / + / 4 / 1 / 2 / 3 / + / 4 / + / 1 / 2 / 3 / 4 / + / 1 / 2 / 3 / 4
The first barline should go after the first quarter note (4th note). The second barline should go after the 10th note. The last barline should go right before the last note.
Step-by-step explanation:
It is four beats per measure, so the first note (half note which is 2 beats) plus the two eighth notes (eighth note is 1/2 beat) plus the quarter note (quarter note is 1 beat) equals four. In the third bar, the half note with the dot is three beats (dotted half note is 3 beats). The last note is four beats (whole note is four beats).