In math we use blank to show repeated addition and we use black to show repeated multiplication

What is the missing constant term in the perfect square that starts with x^2 -20x

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

Kayla has a $500 budget for the school party.she paid $150 for the decorations.food will cost $5.50 per student. what inequality represents the number of students,s, that can attend the party?