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

a stands for adults and k stands for kids. So, just substitute each choices into your equation 8a + 4k. Whichever does not result to 72 is your answer