Help please I dont know what to do

Abcd is a square. what is the measure of angle bac

The function models the number of accidents per 50 million miles driven as a function

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