Perform the indicated operation.(-16n + 2n7 + 9n6) - (11n6 + 4n7 - 4n)
A. -2n7 - 2n6 - 12n
B. -2n7 - 2n6 - 20n
C. -2n7 + 13n6 - 20n
D. -16n14
Answer: A
Mathematics
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Find the equation in standard form of the parabola described.The focus has coordinates (-21, 0), and the equation of the directrix is x = 21.
A. y2 = 84x B. y2 = -84x C. x2 = -84y D. y2 = -21x
Mathematics
Find the x- and y-intercepts. If no x-intercepts exist, state so.y = x2 + 2x + 3
A. No x-intercepts, (0, -3)
B. No x-intercepts, (0, 3)
C. 
, (0, 3)
D. 
, (0, -3)
Mathematics
Evaluate the expression for the given value of the variable.
for x = 5
A. -3 B. 3 C. 57 D. 0
Mathematics
Solve the double inequality.5 < 2a + 5 ? 13
A. 0 ? a < 4 B. 0 < a ? 4 C. 0 < a < 4 D. 0 ? a ? 4
Mathematics