Solve the equation by completing the square.-x2 + 2x = -1
A. {1, 2}
B. 
C. {-1 ± 
}
D. {1 ± 
}
Answer: D
Mathematics
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For the smooth curve r(t), find the parametric equations for the line that is tangent to r at the given parameter value 
r(t) = (3 sin t)i - (8 cos 3t)j +e-7tk ; to = 0
A. x = 3t, y = -8, z = 1 - t B. x = 3t, y = 8, z = 1 + t C. x = 3, y = -8t, z = -7 + t D. x = 3t, y = -8, z = 1 - 7t
Mathematics
Let g(r, s, t) =  figure.png)
. Find  figures 4.png)
 multiple choice.png)
Mathematics
Solve the problem.The total cost in dollars for a certain company to produce x empty jars to be used by a jelly producer is given by the function C(x) = 0.3x + 39,000. Find 
the cost of producing 100,000 jars.
A. $30,000 B. $100,039 C. $69,000 D. $39.30
Mathematics
Is f continuous at ?3 ?
Mathematics