Question 17 your answer is correct find the inverse

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Question 17 Your answer is CORRECT. Find the inverse of the given matrix, if it exists. a) b)
11/20/2019 Print Test c) d) e) f) None of the above. Question 18 Your answer is CORRECT. Solve the following system of equations by using the inverse of the coefficient matrix.
11/13 Question 19 Your answer is INCORRECT. A certain academic department at a local university will conduct a research project. The department will need to hire graduate research assistants and professional researchers. Each graduate research assistant will need to work 26 hours per week on fieldwork and 14 hours per week at the university's research center. Each professional researcher will need to work 11 hours per week on fieldwork and 29 hours per week at the university's research center. The minimum number of hours needed per week for fieldwork is 154 and the minimum number of hours needed per week at the research center is 131. Each research assistant will be paid $257 per week and each professional researcher will be paid $402 per week. Let x denote the number of graduate research assistants hired and let y denote the number of professional researcher hired. The department wants to minimize cost. Set up the linear programming problem for this situation.
11/20/2019 Print Test
12/13 Question 20 Your answer is CORRECT. Given the linear programming problem
11/20/2019 Print Test Use the method of corners to determine the where the minimum occurs, and give the minimum value.
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