Answer:
a + c = 1250
$7.00a + $5.50c = $7979
Explanation:
Making the system of equations for the number of tickets involved how many attended and who attended
It's showing 1250 attended and children and adults showed up. Let's a = adults and c = children
a + c = 1250 <--- that's saying adults + children equal 1250
For $ earned, it involves how much each ticket was and the total cost
Looks like we have prices for a and c and the total cost which was 7979. Since adults were 7.00, we'll call that 7.00a. And for children it was 5.50, we'll call that 5.50c
Putting it together 7.00a + 5.50c = 7979 because all the $7.00 tickets plus all the $5.50 tickets cost $7979