Answer:
System of equation : 14x+23y = 213 and y = x-2
The cost of regular tickets is $7 and the cost of tickets with donation is $5.
Explanation:
Let regular ticket's cost be x and tickets with donation's cost be y.
14x+23y = 213
y = x-2
Now,
14x+23y = 213
or, 14x+23(x-2) = 213
or, 14x + 23x - 46 = 213
or, 37x = 259
so, x = 7
again,
y = x-2
or, y = 7-2
so, y = 5