Answer the question.To complete the square from an equation in the form x2 - ax = b, is it ever appropriate to subtract a positive number from each side?
What will be an ideal response?
No. When completing the square, half the coefficient of the linear term is squared. Thus, the number added to both sides is always positive.
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (7t - 4t3)i + 2tan(3t)j + e5tk
A. a
= - 2?i + 72j + 25e5/12?k
B. a
= - 2?i - 72j + 25e5/12?k
C. a
= - 2?i - 72j + 25k
D. a
= 2?i + 72j + 25e5/12?k
Solve the polynomial inequality. Express the solution in interval notation.2x2 - 5x ? 7
A. (-?, -1) ? 
B. 
C. 
D. (-?, -1] ?
Find the real solutions, if any, of the equation. Use the quadratic formula.8x2 - x + 3 = 0
A. {
, 
}
B. {
, 
}
C. {
, 
}
D. no real solution
Find the volume of a pyramid with a square base of 9 meters on each side and a height of 12 meters. ?
A. 
B. 
C. 
D. 
E. none of these