Decide whether the relation is a function.
A. Function
B. Not a function
Answer: B
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Solve the variation problem.The pressure of a gas varies jointly as the quantity of the gas (measured in moles) and the temperature and inversely as the volume of the gas. Suppose that the pressure of a particular gas is 
(kPa) when the quantity is 
the temperature is 
and the volume is 
Find the pressure of that gas when the number of moles is 9,
the temperature is 
and the volume is 
A. 1170 kiloPascals
B. 2160 kiloPascals
C. 1125 kiloPascals
D. 2250 kiloPascals
Solve the problem.How many players are there in the weighted voting system 
?
A. 20 B. 9 C. 10 D. 28 E. none of these
Match graph with the appropriate equation.
A. 25x2 + 81y2 = 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 5x2 + 9y2 = 1
Find the domain and range.y = 4x - 10
A. D = (-?, ?); R = [0, ?) B. D = (-?, ?); R = [-10, ?) C. D = [0, ?); R = (-?, ?) D. D = (-?, ?); R = (-?, ?)