Answer: x = (-5, 0)
y = (0, 13)
I believe it would be A. copying a segment, because with a parallel line the lines will not be intersecting, and copying the segment would be the only answer to give you lines that don't intersect.
WIth the parameterization

we end up with

We also have

So in the line integral, we get


Answer:
b
Step-by-step explanation:
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DB/dt = k*B
dB/(kB) = dt
Integrating both sides:
1/k*ln|B| = t + C
B = C*e^(kt)
At time t = 0, B = 4000 and at time t = 3 (3 hours past 9 AM), B = 4500
4000 = C
4500 = 4000*e^(3k) => k = 1/3*ln(9/8)
At time t = 15 (Midnight), B = 4000*e^(1/3*ln(9/8)*15) = 4000*(9/8)^5 = 7208 bacteria