Solve the quadratic equation.x2 + 4x + 4 = 11
A. 2 ± 
B. 9
C. -2 ± 
D. No real solutions
Answer: C
Mathematics
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Find an explicit formula for an.0, 
, 0, 
, 0, . . .
A. an = 
B. an = 
C. an = 
D. an = 
Mathematics
Solve the problem.The number of gallons of water in a swimming pool t minutes after the owner begins to drain it is 
At what rate is the water being drained at the end of 10 minutes?
A. 500 gal/min B. 1000 gal/min C. 5000 gal/min D. 2500 gal/min
Mathematics
Solve and graph the solution set.6 - 7x - 3 ? -8x - 1
A. {x|x < -7} or (-?, -7)
B. {x|x > -7} or (-7, ?)
C. {x|x ? -4} or (-?, -4]
D. {x|x ? -4} or [-4, ?)
Mathematics
Factor completely.x2 - 1.6x + 0.64
A. (x + 0.8)(x - 0.8) B. (x - 0.8)2 C. (x + 0.8)2 D. Prime
Mathematics