Answer:
Inequality is 3x + 5y ≥ 1000
At least 80 adults must attend the fundraiser.
Step-by-step explanation:
Let the number of students = x and the number of adults = y.
Also, each adult and student ticket is sold for $5 and $3.
Since, the student council wants to raise at least $1000.
The inequality representing the situation is,
3x + 5y ≥ 1000
We have total number of students attended the fundraiser are 200. So, x = 200.
That is,
3×200 + 5y ≥ 1000
i.e. 600 + 5y ≥ 1000
i.e. 5y ≥ 1000 - 600
i.e. 5y ≥ 400
i.e. y ≥ 80
Thus, we get that at least 80 adults must attend the fundraiser.
