Tickets to the zoo cost $14 for adults and $10 for children. a group of 12 people went to the zoo, and the tickets cost $140. the system of equations models this situation, where x is the number of adults and y is the number of children.
x+y=12
14x+10y=140
how many adults and how many children were in the group?

a.
5 adults and 7 children

b.
6 adults and 6 children

c.
7 adults and 5 children

d.
8 adults and 4 children