I need help pls pls pls pls it had to do with systems by substitution ! Can anyone help ?

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

In which form is the following function written? y = - 2(x – 3)(x + 5)

Af jewelry box is in the shape of a rectangular prism with an area of 528 cube inches. the length of the box is 12 inches and the height is 5 1/2 inches. what is the width of the jewelry box