Find the foci of the ellipse.7x2 + 2y2 + 14x - 16y + 25 = 0
A. (-1 + 
, 4) , (-1 - 
, 4)
B. (-1, 4 + 
) , (-1, 4 - 
)
C. (1, -4 + 
) , (1, -4 - 
)
D. (-1, 4 + 
) , (-1, 4 - 
)
Answer: D
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?Which of the following is not a method to find scale drawings of figures? ?
A. ?Using a grid system. B. ?Using a grid system, and then enlarging/shrinking it for the dilation. C. ?Determining the constant of proportionality. D. ?Find a missing length, given a conversion factor. E. ?None of the above.
Solve the problem.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 25 liters B. 12.5 liters C. 20 liters D. 16.7 liters
Simplify.-9 + (-14) + (-4) + (-7) + 2 + (-5)
A. -11 B. 5 C. -41 D. -37
Solve the problem.Saji swims 
mi every day. One day he had already swum 
mi. How much further should he swim?
A. 
mi
B. 
mi
C. 
mi
D. 
mi