The National Endowment for the Arts exists to broaden public access to the arts. In 1992, it performed a study to find what types of arts were most popular and how they could attract more people. The matrices below represent their findings.
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a. Find the difference in arts patronage from 1982 to 1992. Express your answer as a matrix.
b. Which areas saw the greatest increase and decrease in this time?. Which areas saw the greatest increase and decrease in this time?