Declan bought 3.25 pounds of apples at $2.39 per pound, and 7.62 pounds of plums at $2.39 per pound. which expression does not show the total cost, in dollars, of his purchase a.)2.39 • 3.25 + 2.39 • 7.62 b.)2.39 • (3.25 + 7.62) c.)2.39 • 3.25 + 7.62 d.)10.87 • 2.39