At what points is the given function continuous?f(x, y, z) = yz cos 
A. All (x, y, z) such that x ? 0
B. All (x, y, z) such that x ? 
C. All (x, y, z) such that 0 ? 
? 2?
D. All (x, y, z)
Answer: A
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Solve the problem.The value V, in dollars, of a shopkeeper's inventory software program is given by 
where t is the number of years since the shopkeeper first bought the program.Complete the ordered pairs: (0, 
); (4, 
); (10, 
)
A. 350; 270; 210 B. 350; 270; 150 C. 330; 270; 150 D. 350; 430; 150
Find the least common denominator for the fractions in the list.
, 
, 
A. 90x5 B. 18x2 C. 45x20 D. 30x5
Solve the problem.Use Ohm's Law, I = 
, to find the current I, given voltage 
and impedance 
A. 845(cos 190° + i sin 190°) B. 13(cos 150° + i sin 150°) C. 13(cos 85.0° + i sin 85.0°) D. 60(cos 150° + i sin 150°)
Find the midpoint of the segment connecting the given endpoints.
, 
A. 
B. 
C. 
D. 