Solve the inequality by the test-point method. Write the solution in interval notation.(x + 5)(x + 4)(x - 1) > 0
A. (-?, -5) ? (-4, 1)
B. (-5, -4) ? (1, ?)
C. (-?, -4)
D. (1, ?)
Answer: B
Mathematics
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Solve.Find the volume generated if the first-quadrant region bounded by 
is revolved about the x-axis.
A. 36? B. 18? C. 6? D. 21?
Mathematics
Match the system of inequalities with the appropriate graph.x + 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Mathematics
Use a proportion to solve the problem.According to a recent study, of every 100 people in one American city, 50 are considered overweight. The population of the city is about 2.52 million. How many of these people would be considered overweight?
A. 1,260,000 people B. 1,177,596 people C. 1,269,828 people D. 126,000 people
Mathematics
Perform the matrix multiplication.Let A = 
and B = 
. Find AB.
What will be an ideal response?
Mathematics