Someone help me answer this

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

If g(x) is an odd function, which function must be an even function?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?