Add or subtract. Simplify the answer. 
+ 
A. 
B. 
C. 
D. 
Answer: D
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Rephrase the statement in the requested symbolic form.contrapositive of a ? b
A. a ? ~b B. ~b ? ~a C. ~a ? ~b D. b ? a
Determine the given complex number raised to a power and write the answer in rectangular form.
3
A. -500
+ 500
i
B. 5
+ 5
i
C. 50
+ 50
i
D. 15
+ 15
i
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 8, the temperature is 
and the volume is 
A. 1632 kiloPascals
B. 1728 kiloPascals
C. 768 kiloPascals
D. 816 kiloPascals
Solve the formula for the given variable.A = P(1 + rt)
for t
A. t = 
B. t = 
C. t = 
D. t = 