The polynomial d^2 - pi • r^2 represents the area of a region, where d is the diameter of a circle and r is the radius of the circle. How can this happen? Justify your answer with a diagram.​

Alonso walked with his friend andy one day, and wanted to compare their speeds. alonso walked 3 miles in one hour, and andy walked 2 miles in 2 hours. complete the table to graph the relationship for each person.

What is the reflection image of (5,-3) across the line y = -x?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10