area of rectangle = l×b
So, area of drawing = l×b = 8cm×4cm = 32cm²
The answer your looking for is 10x
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:
im not sure if this is correct but, i got C