Marta’s customer bought 4 large oranges at $0.75 each and 8 small oranges at $0.50 each plus tax was a total of $7.49. She used t to represent the amount of tax. Explain her errors in the diagram.

A bar diagram. The top box contains t. The bottom 3 boxes contain 7.49, 0.75 (8), and 0.50 (4).

The total, 7.49, should be the top bar, and the variable, t, should be one of the partial bars. The prices for a certain number of oranges is also incorrect. $0.75 should be multiplied by 4 and $0.50 multiplied by 8.

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Marta’s customer bought 4 large oranges at $0.75 each and 8 small oranges at $0.50 each plus tax was a total of $7.49. She used t to represent the amount of tax. Explain her errors in the diagram. A bar diagram. The top box contains t. The bottom 3 boxes contain 7.49, 0.75 (8), and 0.50 (4).

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Marta’s customer bought 4 large oranges at $0.75 each and 8 small oranges at $0.50 each plus tax was a total of $7.49. She used t to represent the amount of tax. Explain her errors in the diagram.

A bar diagram. The top box contains t. The bottom 3 boxes contain 7.49, 0.75 (8), and 0.50 (4).