Graph the linear inequality in two variables.x + 5y ? 4
A. 
B. 
C. 
D. 
Answer: A
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Solve the given applied problems involving variation.The mass of a liquid varies directly as its volume V. If the mass of the liquid in a cubical container 4 cm on a side is 128 g, find the mass of the liquid in a cubical container 5 cm on a side.
A. 10 g B. 125 g C. 250 g D. 105 g
Find the domain of the function.
A. {x|8 ? x ? 31} B. {x|-8 ? x ? 31} C. {x|-8 ? x < 8 or 8 < x ? 31} D. {x|x ? -8}
Solve the inequality.x + 5 ? x - 2
A. 
B. (-?, ?)
C. ?
D. 
Solve the problem.Suppose that the salinity S of ocean water at a given depth d is modeled by the equation 
where S is measured in grams salt per kilogram water and d is measured in meters. What is the salinity when the depth is 688 m? Round your answer to the nearest hundredth.
A. -29.93 g salt/kg water B. 37.87 g salt/kg water C. 94.82 g salt/kg water D. 97.62 g salt/kg water