The answers are 12x+8y≥1000,
12x+8y≤1000, x+y≤200, and x+y≥200,
The explanation behind the
first equation is 12x signifies the regular tickets, being at $12 each. And 8y signifies
the student tickets being $8 each. The symbol is "≥", because the
manager wants $1000 or more from the ticket sale. While the second equation,
just the same with the first but the symbols differ since the sale could be
lesser than 1000.
The explanation behind the
third equation is 200 is the number of seats at most. In the fourth equation,
if many people came, they would lack seats so that’s why the greater sign is
used.
