Buthaina, Faris, and Salem served a total of 103 orders Monday at the school cafeteria. Salem served 7 fewer orders than Buthaina. Faris served 4 times as many orders as Salem. How many orders did they each serve? Number of orders Buthaina served: Number of orders Faris served: Number of orders Salem served:

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Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.