Question 889478
The prices are unknown.
Let x = hotdog price
Let y = popcorn ball price


2x+4y=14 and 4x+7y=26 ,  two equations accounting for the cost of the individuals' purchases.


The first one simplifies to x+2y=7.


The system which models these two purchases can be shown as


{{{system(x+2y=7,
4x+7y=26)}}}