Solve the problem.If the radius of a sphere is r feet, then the volume of the sphere is 
?r3 cubic feet. Find the volume of a sphere with radius of 9 feet. Round your answer to two decimal places.
A. 9160.91 cubic feet
B. 3053.64 cubic feet
C. 1526.82 cubic feet
D. 309.39 cubic feet
Answer: B
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Perform the indicated operation. Write the result in the form a + bi.
A. 
- 
i
B. 
- 
i
C. 
+ 
i
D. 
- 
i
Solve the inequality and draw a number line graph of the solution.-5(3z + 15) < -20z - 45
A. z < -20
B. z > -20
C. z < 6
D. z > 6
Provide an appropriate response.Which one of the following is a description of the graph of the solution set for the system below?x2 + y2 ? 364x2 + 9y2 ? 36
A. The area outside the circle (defined by the first equation), including the border. B. The area inside the ellipse (defined by the second equation), including the border. C. The area outside the ellipse (defined by the second equation), including the border. D. None of these
Write a system of linear inequalities that describes the shaded region.
