Jeremy is making a trail mix containing raisins and peanuts. Raisins cost $1.50 per pound. Peanuts cost $2.50 per pound. Jeremy

The correct answer is C. 1.5r + 2.5(5 – r) = 10.50.

The solution is c. 1.5r + 2.5(5 – r) = 10.50. Let r represent the count of raisins and p represent peanuts. The cost of raisins is $1.50 per pound which gives us 1.5r. Peanuts are priced at $2.50 per pound, leading to 2.5p. Jeremy's total expenditure is $10.50 which translates to 1.50r + 2.50p = 10.50. For 5 pounds of trail mix, the equation r + p = 5 applies. Thus, our system of equations becomes 1.5r + 2.5p = 10.50 and r + p = 5. Rearranging the second equation gives us p = 5 - r, and substituting this into the first leads to 1.5r + 2.5(5 - r) = 10.50. Hence, the correct equation is c. 1.5r + 2.5(5 – r) = 10.50.