Solve the equation.20d2 + 18d + 4 = 0
A. 
, 
B. - 
, - 
C. 
, 2
D. - 
, - 
Answer: B
Mathematics
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Determine the number of subsets of the set.A set of days of the week
A. 256 B. 127 C. 124 D. 128
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Use a formula to express w as a function of t if 
and 
.
?
A. 
B. 
C. 
D. 
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The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 1/2, x = 9
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics
Find the coordinates of the vertex for the parabola defined by the given quadratic function.f(x) = (x + 7)2 - 4
A. (-7, -4) B. (7, -4) C. (-7, 4) D. (7, 4)
Mathematics