Answer:
6
Step-by-step explanation:
15 - 3 = 12, divide that by 2 and your answer is 6.
If they sold 89 calendars over 4 weeks, the 'equation' would look like (x = average calendars sold over 4 weeks):

If you solve it, you get:

Which is equal to
22.25. Hope this helps!
Answer:
6
Step-by-step explanation:
Answer:
10 units
Step-by-step explanation:
