Find the matrix product, if possible.
A. 
B. 
C. 
D. Does not exist
Answer: C
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Plot the graph of the function f in an appropriate viewing window. Select the correct answer.
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Simplify the expression using the order of operations.(7 + 2)[5 + (5 + 3)]
A. 49 B. 280 C. 117 D. 182
Solve the problem.As part of her retirement savings plan, Patricia deposited $100 in a bank account during her first year in the workforce. During each subsequent year, she deposited $30 more than the previous year. Find how much she deposited during her twentieth year in the workforce. Find the total amount deposited in the twenty years.
A. $670; $7700 B. $700; $16,000 C. $700; $8000 D. $670; $15,400
Solve the problem. Assume that probabilities are representative of the best strategies. Round to two decimal places, if necessary.A person has hired an investment broker to buy stock. The broker has three different stock funds that are of interest, but each is sensitive to a certain economic indicator that is impossible to predict. The indicator will be positive, neutral, or negative. The table below shows the payoffs in thousands of dollars. Find the expected value of the investment. 
A. 14.54 B. 46 C. 9.18 D. 42