Don wants to make 10 pounds of a mix of toffee-coated peanuts and toffee-coated almonds for a gathering of friends coming to his house to watch a football playoff game. He can buy toffee-coated peanuts for $1.69 per
pound and toffee-coated almonds for $2.59 per pound.
Part A If he buys a pounds of toffee-coated almonds and completes the 10 pounds with the toffee-coated
peanuts, how can you express the number of pounds of toffee-covered peanuts? Explain.
Part B Write an expression in terms of a that represents the total cost of the mix.