1. A universal auto-steer system costs $6500. When used for primary tillage, it can reduce the overlap of a tandem disk from 2 ft. to 0.5 ft. on a 30 ft. implement. How many acres are required to break-even on this investment? Round to the nearest whole acre. 

2. An auto-steer system can reduce the overlap for sub soiling (12 inches depth) from 2 ft. to 0.5 ft. on a 25 ft. implement. What is the saving per 1 acre? Round to the nearest cent. 

3. A producer is trying to justify purchasing a new electric drive system for his 12-row planter. The system will cost $22,000 to install on the planter. He is hoping to decrease his planting into headlands by 3.5%. He farms 1000 acres of corn following corn with a target rate for the seed to produce 200 bu./ac of corn. His typical average yield is 210 bu/ac of corn, the price for corn this year is $3.25 per bushel. The producer understands that when planting into headlands he loses 10% of his average yield due to double planted areas. What is the total savings for seed and yield for the first year?