Admission to the movies costs $8 for adults and $4 for kids. The total bill for your entire extended family was $72. This scenario can be modeled by the equation 8a + 4k = 72. Which is not a possible combination of adults and kids?
Answer

7 adults and 4 kids

8 adults and 2 kids

3 adults and 12 kids

5 adults and 6 kids

Question

Admission to the movies costs $8 for adults and $4 for kids. The total bill for your entire extended family was $72. This scenario can be modeled by the equation 8a + 4k = 72. Which is not a possible combination of adults and kids?
Answer
		
7 adults and 4 kids
		
8 adults and 2 kids
		
3 adults and 12 kids
		
5 adults and 6 kids

anonymous · Answer

Hello there! I can help you with this question. What is awesome about a question like this is that you can use the answer choices given to get the answer! :D

In your question, it says that adult tickets cost $8, and child tickets cost $4. so I can solve one of the incorrect answers for you so you can see how to solve it:

8 adults and 2 kids

So you get

8($8) + 2($4) = $72

(hint: set all equations equal to 72)

so solving you get:

$64 + $8 = $72

72 = 72

So this combination IS possible, which means it is an incorrect answer. Do you think you can solve this now?

anonymous · Answer

so if it equals 72 its wrong or right???

anonymous · Answer

If it equals 72, it's wrong, because your question is asking for an combination that is NOT possible. :)

anonymous · Answer

okay i think i get it now thanks!

anonymous · Answer

Great! :) Well, I am glad to help. And WELCOME TO OPENSTUDY!!! :D Enjoy your time here, and be sure to check our Code of Conduct & Terms and Conditions from time to time so you can keep on enjoying what OS has to offer. :) Here are the links: CoC: http://openstudy.com/code-of-conduct T&C: http://openstudy.com/terms-and-conditions Cheers! ~Taffy