Please help solve correctly. NO links or files. Correct answers only if not report. I will even give an additional 10 if correct.

The figure below shows rectangle abcd and the triangle eca on a coordinate plane. which of the following expressions represents the perimeter of triangle of triangle eca in units

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2