Answer:
21
Step-by-step explanation:
the sum of the express of the summation of the notation
9514 1404 393
Answer:
Step-by-step explanation:
The equation for the total number of cases is ...
x + y = 20
The equation for the total cost of the cases is ...
20x +30y = 450
_____
<em>Additional comment</em>
The solution to these equations is (x, y) = (15, 5).
Answer:
You are absolutely correct!
Step-by-step explanation:
The correct answer is C!
Hope this helps you realize!