Michael and Kevin want to buy chocolates. They can't agree on whether they want chocolate—covered almonds, chocolate-covered peanuts, or chocolate-covered raisins.They agree to create a mix. They bought 4 pounds of chocolate-covered almonds at $3.50 per pound, 3 pounds of chocolate-covered peanuts for $2.75 per pound, and 2 pounds of chocolate-covered raisins for $2.25 per pound. Determine the cost per pound of the mix.