A circle has a radius of 50 centimeters whats its area

Which of the following expressions are equivalent ?

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]