Question

http://prntscr.com/73xerg

Answer 1

omg i has that prof pic...........heh ill leave now.....

Answer 2

xD

Answer 3

velocity = distance/time
vel = 400 km /time
(vel + 12) = 400 km / (time -100 minutes)

vel*time = 400
(vel + 12) * (time -100 minutes) = 400

vel*time = (vel + 12) * (time -100 minutes)

Answer 4

you have 2 equations
v = 400/t

v + 12 = 400 / ( t - 5/3)

solve for v and t

Answer 5

the second equation can be written as
v + 12 = 1200 / (3t - 5)

from the first equation t = 400/v

so plug this into the above equation and solve for v

Answer 6

And I was gonna answer this... didn't see the answers already posted :c
x km/h = y minutes of 400 km
x+12 km/h = y-100 minutes for 400 km

Answer 7

how 5/3?