Solve the problem. An online bookstore had 372 copies of a certain book in stock on January 1st. By January 10th, the store has taken orders for 625 copies of the book. How many copies were on back order?
A. 153
B. 997
C. -253
D. 253
Answer: D
Mathematics
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Solve the problem.Evaluate 
at (x, y, z) = (3, 2, 2) for the function u = p2 - q2 - r; p = xy, q = y2, r = xz.
A. 26 B. 14 C. 10 D. 22
Mathematics
Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.46 B. 0.865 C. 0.4481 D. 0.4169
Mathematics
Solve the problem.Evaluate 
by transforming to cylindrical or spherical coordinates.
A. 729? B. 6561? C. 8748? D. 81?
Mathematics
If 
and 
, use the multiplication property of probabilities to find
src="https://sciemce.com/media/3/ppg__cognero__8.7_Probability__media__07232742-4cea-4031-87c2-28c67cc5347c.PNG" style="vertical-align: middle;" />. ? Please round the answer to the nearest hundredth. Fill in the blank(s) with the appropriate word(s).
Mathematics