Complete the identity.
= ?
A. 
B. 
C. 
D. 
Answer: A
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Use cylindrical coordinates to find the volume of the indicated region.the region bounded below by the xy-plane, laterally by the cylinder 
and above by the plane 
A. 
?
B. 
?
C. 
?
D. 
?
Solve.A recipe calls for 8 cups of raspberries for every 21 people. How many cups of raspberries are needed for the same recipe that will serve 168 people.
A. 348 cups B. 64 cups C. 257 cups D. 441 cups
A plane in three dimensional space can be written as ax + by + cz = d. We can find the possible intersections of planes in this form by writing them as systems of linear equations and using reduction to solve them. If d = 0 in each equation, then we have a homogeneous system with either a unique solution or infinitely many solutions.Determine whether the intersection of the planes: 
has a unique solution or infinitely many solutions; then solve the system.
What will be an ideal response?
Write the number as a product of a real number and i. Simplify the radical expression.
A. ± 10
B. -10i
C. 10i
D. -i