a fish farmer will purchase no more than 5000 young trout and bass from the hatchery and will feed them a special diet for the next year. The cost of food per fish will be.50 for trout and .75 for bass and the total cost is not to exceed $3000. At the end of the year, a typical trout will weigh 3lbs and bass will weigh 4lbs. How many of each fish should be stocked in the pond to maximize the total pounds of fish at the end of the year?

What are my constraints and vertices?