What is the image of the point (2, -3) after a rotation of 180° counterclockwise about the origin?

On an airplane there are two seats on the left side and three seats on the right side there are 90 seats o the right side of the plane

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122