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. 2-3 sentences.

t (on top)
7.49 (on left)
0.75(8) (in middle)
0.50(4) (on left)

Marta's errors are in the placement of the values in the diagram. The value of 7.49 should be in the middle as the total amount after including the tax. The value of 0.75(8) should be on the right as the cost of the 8 large oranges, and the value of 0.50(4) should be on the left as the cost of the 4 small oranges.