Help me please , I need to turn this in by midnight

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

True or false look at the picture pls : /

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field