You would plug in 4 for x.
f(4)= (4) - 6 = -2
Let x = hours to meet
train one has a 2 hour head start or 210 km head start
210 + 105x = 135x
30x = 210
x = 7 hours to meet
Answer:
Dude where is the picture
Step-by-step explanation:
SPAMMING TILL ON LEADERBOARD
so 3 tenths is 0.3 and 5 tenths is 0.5 but if you need to add them you would get 0.8