Solve the problem.Assume the total revenue from the sale of x items is given by 
while the total cost to produce x items is 
Find the approximate number of items that should be manufactured so that profit, 
is maximum.
A. 228 items
B. 178 items
C. 56 items
D. 128 items
Answer: D
Mathematics
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Solve the problem.An airplane is flying in the direction 38° east of south at 885 km/hr. Find the component form of the velocity of the airplane, assuming that the positive x-axis represents due east and the positive y-axis represents due north.
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.If the series 
is integrated twice term by term, for what value(s) of x does the new series converge?
A. 0 ? x < 2 B. 0 ? x ? 2 C. 0 < x < 2 D. 0 < x ? 2
Mathematics
Evaluate the spherical coordinate integral.
A. 
?
B. 
?2
C. 
?2
D. 
?
Mathematics
Refer to the following normal curve, with mean ? and standard deviation ?.
The value of the first quartile Q1 =
A. 100 B. 127 C. 50 D. 73 E. none of these
Mathematics