Johnny and Sybil has 28 books altogether. Sybil has 4 more than twice the number of books that Johnny has. How many books does each person have? Solve the problem algebraically using a system of equations. You must show all work, step by step, including representation and check to get full credit. Skip lines between each step (or set of work).

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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.