Scene #3 Beijing West Railway Station -- Ezt A conductor on a high-speed train entered an onboard restroom, and imagine his surprise to
find the ceiling had been dismantled, the wiring in disarray, and a hybrid electric fuel cell
missing. Found written on a roll of toilet paper was this note left by Li Squareds.
These trains sure go fast. After doing some riding, I built these linear models
to estimate their travel time including their station stops. If I'm trying to
conquer the world quickly, I need the fastest train.
Which one is the fastest?
(x = hours, y = miles. I'm using mph instead of km/h for you silly Americans.)
zH5NGGIÓ GãoSD Tế Lù
D
T
M
B
y + 12 = 175x
y + 5
= 31x
5
186x - y = 10
y = 100x – 10
y
= x - 0.15
100
(letter of train)
(speed of train)