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Mathematics 13 Online
OpenStudy (anonymous):

The matrix gives the number of automatic and manual opening umbrellas sold at a shop in 1985 and 1995. Use a linear model to represent the sales of each type of umbrella. Let t=0 correspond to 1985. Matrix 1985 1995 Automatic 10 20 Manual 25 10 How do I do the equation part of this

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