Answer-4.50s + 8.50a= 650
We must come to a total of 650, so behind our equal sign is 650.
=650
Each student ticket is 4.50 so the first part of our inequality is 4.50s. Each adult ticket is 8.50, so the second part o the inequality is 8.50a. Our final equation should be
4.50s + 8.50a= 650
HOPE THIS HELPS