Solve each system using substitution or elimination. Show all required work. X^2+y^2=40 -x+y=-8

Which of the following is true for the relation f(x)=2x^2+1

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2