Mathematics, 20.03.2020 10:19, estermartinez

A car backs up 12 feet, followed by 9 more feet. The car's position can be represented by the sum negative 12 plus left parenthesis negative 9 right parenthesis. Find the sum. Use pencil and paper. Represent the situation with a drawing. Superimpose a number line in the drawing to represent the situation in a third way.

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A car backs up 12 feet, followed by 9 more feet. The car's position can be represented by the sum ne...