PLEAZE HELP FIND THE LENGTH OF ONE BASE ON A TRAPEZOID - WILL GIVE BRAINLIST

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.

Which of the following circles have their centers in the third quadrant? check all that apply.