A parabola has its vertex at the origin, and the coordinates of its focus are (0, 10) . Find the equation of the directrix.
Mathematics
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Write the inequality in interval notation.-9 ? x ? 9
A. (-9, 9) B. (-?, 9) C. [-9, 9] D. (-9, 9]
Mathematics
For the pair of functions, find the indicated sum, difference, product, or quotient.f(x) = x + 7, g(x) = 
Find (f - g)(-7).
A. does not exist
B. 0
C. 
D. 
Mathematics
Provide an appropriate response.An inventory clerk has 6 boxes of screws each containing 384 screws and 10 boxes of the same screws each containing 96 screws. How many screws are there?
A. 496 screws B. 1,440 screws C. 2,205 screws D. 3,264 screws E. none of the above
Mathematics
Determine whether the function is a polynomial function.f(x) = 5x7 - x5 + 
x
A. Yes B. No
Mathematics