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
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<em>Additional comment</em>
The solution to these equations is (x, y) = (15, 5).
Are those all your options? the answer would be 3x+10= 28 but you dont have it as a multiple choice.
You are subtracting the results in the parenthesis.
I would go with a difference.
Since 8 is being multiplied by 23.6 and -7.8, I would say product.
"A" is the best answer choice.
I hope this helps!
~kaikers
