Find the domain of the function.
?
?
A. All real values of 
and 
B. All real values of 
and 
satisfying 
C. All real values of 
and 
satisfying 
Answer: C
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Subtract.(0.1x4 - 0.6x2 + 0.3) - (3.3x4 + 3.5x - 2.6)
A. -3.2x4 - 0.6x2 + 3.5x + 2.9 B. -3.2x4 - 0.3x2 - 2.3 C. -3.2x4 - 0.6x2 - 3.5x + 2.9 D. -3.2x4 - 0.6x2 - 3.5x - 2.3
Find the standard deviation of the data summarized in the given frequency table.The test scores of 40 students are summarized in the frequency table below. Find the standard deviation. 
A. 12.2 B. 12.8 C. 14.2 D. 13.5
?A population of bacteria is introduced into a culture. The number of bacteria P can be modeled by 
where t is the time (in hours). Find the rate of change of the population when 
.
?
A. 21.95 bacteria/hr B. ?3.53 bacteria/hr C. ?10.6 bacteria/hr D. ?2.07 bacteria/hr E. ?7.32 bacteria/hr
Solve the problem.How many liters of a 30% alcohol solution must be mixed with 90 liters of a 50% solution to get a 40% solution?
A. 18 L B. 180 L C. 90 L D. 9 L