Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the 
. y = 3cos (?x), y = 3, x = -0.5, x = 0.5
A. 9?
B. 
?
C. 3?
D. 18?
Answer: B
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Solve.Find the midpoint of the line segment formed by joining the points P1 = (4, -4) and P2 = (-4, 3).
A. 
B. (0, -1)
C. (8, -7)
D. 
Solve the problem.The sum of three numbers is -4. If the second number is subtracted from the sum of the first and third numbers, the result is 4. If the third number is subtracted from the sum of the first and second numbers, the result is 6. Find the three numbers.[Hint: let x represent the first number, y the second number, and z the third number. Use the given conditions to write and solve a system of equations.]
A. x = 6, y = -4, z = -6 B. x = 5, y = -4, z = -5 C. x = 3, y = -2, z = -5 D. x = 6, y = -3, z = -7
Solve the problem.Find the common difference of an arithmetic sequence if the first term is -1 and the 8th term is -22.
A. -21 B. -3 C. 21 D. 3
Add or subtract as indicated. Write the answer in simplest form.
- 
A. 
B. 
C. 
D. 