Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Answer: D
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Solve the following graphically. If necessary, round answers to the nearest thousandth.log x3 = (log x)3
A. {1, 0.019, 53.957} B. {1, 0.138} C. {1, 3} D. {0, 1}
Solve the problem.A projectile is thrown upward so that its distance above the ground after t seconds is 
After how many seconds does it reach its maximum height?
A. 42 sec B. 28 sec C. 21 sec D. 14 sec
Use the formula
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to find the integral.
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A. 
B. 
C. 
D. 
E. 
Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = -x2(x + 8)(x2 - 1)
A. 0, touches the x-axis and turns around; 8, crosses the x-axis; -1, touches the x-axis and turns around; 1, touches the x-axis and turns around B. 0, touches the x-axis and turns around; -8, crosses the x-axis; -1, crosses the x-axis; 1, crosses the x-axis C. 0, crosses the x-axis; -8, crosses the x-axis; -1, crosses the x-axis; 1, crosses the x-axis D. 0, touches the x-axis and turns around; -8, crosses the x-axis; 1, touches the x-axis and turns around