What is the image of the point (-1, -4) after a rotation of 90° counterclockwise about the origin?

What kinds of numbers have an odd number of factors?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

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?