1. A Laundromat buys a bank of 10 washing machines for $500 each. They're assumed to depreciate in value to $100 over the course of 10 years at a constant rate. To the nearest dollar, how much will they be worth after 6 years? 2. A city park system is in the process of being renovated in order to increase foot traffic. The renovators divide its space into athletic fields, gardens, and playgrounds. The fields each attract 150 people per month, take up 5,000 square ft., and require an initial cost of $1000 to set up and a monthly cost of $500 to maintain. The gardens each attract 300 people per month, take up 1,000 square ft., and require an initial cost of $5,000 to create and $1,000 to maintain. The playgrounds take up 2,000 square ft., attract 200 people per month, and require an initial cost of $4000 to create and $250 to maintain. The parks have 80,000 square ft. total to renovate, an initial budget of $100,000, and a monthly budget of $10,000. If they want to maximize their potential foot traffic, how much foot traffic could they attract per month? Round to 4 significant figures. 3. A farmer is growing soy, corn, and wheat on 200 acres of land. He has 750 sacks of fertilizer (produced elsewhere on his farm) and a $5,250 budget for seeds and watering. Each acre of soy requires 5 sacks of fertilizer and $30 to seed and water. Each acre of corn requires 3 sacks of fertilizer and $20 to seed and water. Each acre of wheat requires 3 sacks to fertilize and requires $25 to seed and water. If he can wholesale crops of soy for $1,000/acre, corn for $700/acre, and wheat for $800/acre, how many acres of corn should he seed if he wishes to maximize revenue? Round to the nearest acre