Answer:
7. 4
8. 7
Step-by-step explanation:
7. 
Cross multiply


(division property of equality)


8. 
Cross multiply


(addition property of equality)

Divide both sides by 6


X + x + x + x - 20 is equivalent to 4x - 20 because you can add the like terms, or the x's.
Answer: 4
Step-by-step explanation:
Hope this helps
Answer: 12 sides
Step-by-step explanation:
The sum of the interior angles of a polygon is 180(n-2), where n is the number of sides

Answer:
They would recieve cents as change.
Step-by-step explanation:
They bought 2 sandwiches, 1 salad, 1 piece of fruit and 2 drinks
Total = 6 items altogether
They gave cashier cash of 20.03
Which means all items are not more 20.03
If they would receive change, it would be in cents.