Robert buys 3 pounds of bananas at s0.50 per pound and 3 pounds of apples at $1.00 per pound. which of the following expressions represents the total cost of the fruit he bought (in dollars)?

3(0.50) + 3(1.00) = 4.5

3 times 0.50 = 1.5

3 times 1 = 3

a. is correct

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