13 of 17 Scanned with CamScanner 16. Your friend is having difficulty answering the following question. List the steps both algebraically and in words to show your friend how to find the solution for the question using the concepts learned in this course. (7 marks) A farmer encloses a rectangular area with chain link fence and then divided it into 3 smaller rectangles with barb wire fence. Chain link fence costs $20/ft and barb wire fence costs $10/ft. If the entire cost is $3600. determine the dimensions so that the total area is a maximum value. NOTE: This is just three rectangles joined together. Copyright @ 2020 The Ontario Educational Communications Authority. All rights reserved. Scanned with CamScanner 17. Given the curve y = 2.x' -.x', find the point(s) when the slope of the tangent line is 20. (2 marks)