Answer:
A
Step-by-step explanation:
Eliminate B C and D
The answer is -6
Step-by-step explanation:
Because when you time 3 bye a negative 2 you get a negative 6
Answer:
choice 1) 2x - 7
Step-by-step explanation:
(8x - 28)/4 = 2x -7
If the track is 10km long, and X travels at 40 km/h, it will take 1 hour to do 4 laps. this means that car X will do one lap in 15 minutes. Y travels at 30 km/h, which means it will do 3 laps in 1 hour, meaning that car X will do 1 lap in 20 minutes.
X- 15, 30, 45, 60
Y-20, 40, 60
Therefore, after an hour, they will pass again.
