2- We consider the following applied optimization problem. EXAMPLE 1 A farmer has 2400 ft of fencing and wants to fence off a rectangular field that borders a straight river. He needs no fence along the river. What are the dimensions of the field that has the largest area? a) x=900 and y=600 b) x=600 and y=1200 c) x=100 and y=2200 d) x=500 and y=1400 e) x=700 and y=1000 Leave blank