Solve the inequality.9x + 6 - 2x < 10 + 5x + 4
A. {x 
}
B. {x 
}
C. {x 
}
D. {x 
}
Answer: D
Mathematics
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Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Mathematics
Classify the random variable as either discrete or continuous.The number of colleges in a state
A. Discrete B. Continuous
Mathematics
Solve the system by substitution. If the system is inconsistent or dependent, say so.2x + 3y = -2 2x = -8
A. (-4, -2) B. (-2, 0) C. (-4, 2) D. (2, -4)
Mathematics
Solve the problem.Suppose f(x) = 30.2 + 1.3 log (x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the salinity (to the nearest hundredth) when the depth is 609 meters.
A. 85.42 B. -26.58 C. 82.82 D. 33.82
Mathematics