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.
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?