The sum of two numbers is 69. the larger number is three less than twice the smaller number. find the numbers. show your work.

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.