The population density of a certain city is given by the function
?
?
where the origin (0, 0) gives the location of the government center. Find the population inside the rectangular area described by
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: C
Mathematics
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Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics
Given a normal distribution with mean 40 and standard deviation 8, find the number of standard deviations the measurement is from the mean. Express the answer as a positive number.24
A. 2 B. 0.5 C. 16 D. 8
Mathematics
Solve the problem.In a chemistry class, 9 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 4.5 L B. 3.5 L C. 9 L D. 5.5 L
Mathematics
Multiply 
and simplify.
A. 
B. 
C. 
D. 
E. 
Mathematics