Solve the problem.A machine in a factory produces 540 units each hour. How many units does the machine produce per minute?
A. 216 units
B. 22 units
C. 4 units
D. 9 units
Answer: D
Mathematics
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Verify the identity.
= 
What will be an ideal response?
Mathematics
Solve the system for x and y using Cramer's rule. Assume a and b are nonzero constants.x + by = a2x + ay = b2
A. {(a2 + ab + b2, -b - a)} B. {(a2 + 2ab + b2, -b - a)} C. {(a2 + ab + b2, a + b)} D. {(a2 + 2ab + b2, b - a)}
Mathematics
Solve the problem.The owner of a video store has determined that the profits P of the store are approximately given by 
where x is the number of videos rented daily. Find the maximum profit to the nearest dollar.
A. $4900 B. $9852 C. $9800 D. $4952
Mathematics
Find a positive value of the given variable so that the trinomial is factorable.2x2 + bx + 1; b = ?
A. 2 B. 1 C. 3 D. 4
Mathematics