Rationalize the denominator. 
A. 
B. 
C. 
D. 
Answer: D
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Solve the system by substitution or elimination. If a system is inconsistent or has dependent equations, say so.3x + 5y + z = 264x - 5y - z = -53x + y + 5z = 22
A. {(3, 3, 2)} B. {(3, 2, 3)} C. ?; inconsistent system D. {(2, 3, 3)}
Find an equation of the inverse relation.3x2 + 8y2 = 6
A. 3y2 + 8x2 = 6 B. 3x2 + 8y2 = 6 C. 3x2 - 8y2 = 6 D. 3y2 - 8x2 = 6
Collect like terms and then arrange in descending order.-1 + 3x + 
x3 + 10 - x + 
x3
A. 
x3 + 2x + 9
B. 
x3 + 4x + 9
C. 
x3 + 2x + 9
D. 
x3 + 2x + 11
Solve the problem.If a projectile is launched upward from a height of 96 feet at an initial velocity of 80 feet per second, then its height h after t seconds is given by the function 
After how many seconds does the projectile land on the ground?
A. 5.0 seconds B. 3.0 seconds C. 6 seconds D. 11 seconds