Find the focus and directrix of the parabola.y = -10x2
A. 
, x = 
B. 
, x = 
C. 
, y = 
D. 
, y = -
Answer: C
Mathematics
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Assume that the sequence converges and find its limit.a1 = 8, an + 1 = 
A. -8 B. 64 C. 1 D. 8
Mathematics
Perform the indicated operation.Subtract (12a5 - 14a3) from (-8a5 + 3a3).
A. 4a5 - 11a3 B. -20a5 - 11a3 C. -20a5 + 17a3 D. -3a8
Mathematics
Find an equation of the line described. Write the equation in slope-intercept form if possible.Slope - 
, through (4, 4)
A. y = - 
x - 18
B. y = - 
x + 
C. y = 
x - 
D. y = - 
x - 
Mathematics
Find the least common multiple (LCM) of the list of numbers.9, 14
A. 126 B. 9 C. 23 D. 14
Mathematics