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?

3 adults and 12 kids

5 adults and 6 kids

7 adults and 4 kids

8 adults and 2 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?

 3 adults and 12 kids

 5 adults and 6 kids

 7 adults and 4 kids

 8 adults and 2 kids

anonymous · Answer

I know this is easy but just getting a 2nd opinion

anonymous · Answer

B

jim_thompson5910 · Answer

Plug each option into the equation

so for option A), we are given a = 3 and k = 12


8a + 4k = 72

8*3 + 4*12 = 72

24 + 48 = 72

72 = 72 

so option A) is a solution. We want nonsolutions, so we eliminate choice A

anonymous · Answer

Yeah i knwo I did all of them and b equals 64 so it is not a solution

jim_thompson5910 · Answer

good, you got it

anonymous · Answer

yeah thanks for all of ya'll's help :)

jim_thompson5910 · Answer

you're welcome