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Which bar diagram represents the equation 5x + 7.5 = 15?
A bar diagram. The top box contains 5 x. The bottom boxes contain 7.5 and 15.
A bar diagram. The top box contains 7.5. The bottom boxes contain 5 x and 15.
A bar diagram. The top box contains 15. The bottom boxes contain 5 x and 7.5.
A bar diagram. The top box contains 5. The bottom boxes contain 7.5 x and 15.