I need help guys. I don't understand this. I tried to work this out but what i got didn't have an option for it. Can you leave all the notes. Anybody?

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.