The sum of all exterior angles is always 360 degrees.
360/40=9 sides
the polygon has 9 sides.
        
             
        
        
        
The answer is 5663588 for your question
        
             
        
        
        
Answer:
   70 -20x = 60 -15x
Step-by-step explanation:
The amount of money left on Josh's card is ...
   70 -20x
The amount of money left on Jessica's card is ...
   60 -15x
These amounts are the same when ...
   70 -20x = 60 -15x
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<em>Additional comment</em>
The solution to this equation is ...
   10 = 5x   ⇒   x = 2 . . same amount after purchase of 2 pizzas