Answer:
9 minutes
Step-by-step explanation:
departure terminal A : 9:18 a.M
arrive terminal B : 10:03 a.M
time between B and A : 60 minutes (1 hour) - 18 minutes + 3 minutes = 45 minutes
arrive to a stop at : 9:58 a.M
time between A and stop : 58 minutes - 18 minutes = 40 minutes
5 mores tops including B
a stop - 1 stop next -2 stops next -3 stops next -4 stops next -B
average time between stops: 2 minutes
loading unloading time : 1 minute
a stop 40 minutes + (2 minutes to stop 1 + 1 minute in stop 1 )+ (2 minutes to stop 2 + 1 minute in stop 2 )+ (2 minute to stop 3 + 1 minute in stop 3 )+ (2 minutes to stop 4 + 1 minute in stop 4 )+ (2 minutes to stop B)
40 + 2 + 1 + 2 + 1 + 2+ 1 + 2+1 +2=54 minutes
real time between terminal B and A : 54 minutes
schedule time between terminal B and A : 45 minutes
minutes past scheduled time to arrive at Terminal B: 54 minutes -45 minutes=
9 minutes
![\bf f(x)=(x-6)e^{-3x}\\\\ -----------------------------\\\\ \cfrac{dy}{dx}=1\cdot e^{-3x}+(x-6)-3e^{-3x}\implies \cfrac{dy}{dx}=e^{-3x}[1-3(x-6)] \\\\\\ \cfrac{dy}{dx}=e^{-3x}(19-3x)\implies \cfrac{dy}{dx}=\cfrac{19-3x}{e^{3x}}](https://tex.z-dn.net/?f=%5Cbf%20f%28x%29%3D%28x-6%29e%5E%7B-3x%7D%5C%5C%5C%5C%0A-----------------------------%5C%5C%5C%5C%0A%5Ccfrac%7Bdy%7D%7Bdx%7D%3D1%5Ccdot%20e%5E%7B-3x%7D%2B%28x-6%29-3e%5E%7B-3x%7D%5Cimplies%20%5Ccfrac%7Bdy%7D%7Bdx%7D%3De%5E%7B-3x%7D%5B1-3%28x-6%29%5D%0A%5C%5C%5C%5C%5C%5C%0A%5Ccfrac%7Bdy%7D%7Bdx%7D%3De%5E%7B-3x%7D%2819-3x%29%5Cimplies%20%5Ccfrac%7Bdy%7D%7Bdx%7D%3D%5Ccfrac%7B19-3x%7D%7Be%5E%7B3x%7D%7D)
set the derivative to 0, solve for "x" to get any critical points
keep in mind, setting the denominator to 0, also gives us critical points, however, in this case, the denominator will never be 0, so... no critical points from there
there's only 1 critical point anyway, and do a first-derivative test on it, check a number before it and after it, to see what sign the derivative has, and thus, whether the graph is going up or down, to check for any extrema
Answer:
what is the question
Step-by-step explanation:
Answer:
A. x = 4
Step-by-step explanation:
