Need help on math homework please show your work! Visual if possible. I will report if you start promoting elections and other irrelevant content! Please just help and don't just do it for my points!

A strand if thread in a spool wraps around 100 times. What angle does it traverse?

Btw this is all the information my "awesome" math teacher gave me

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

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.

What is the equation of a line that passes through points (0, 4) and (-4,-8)?