Answer:
2$
Explanation:
15 (total) - 3 (the magazine) = 12 (how much he spent for all the notepads)
12 (how much he spent for all the notepads) ÷ 6 (how many notepads h ebought) = 2
in other words:
15$ - 3$ = 12$
12$ ÷ 6 $= 2$
he spent 2$ each notepad