Answer:13
Step-by-step explanation:4 plus -3 is 1 because if there are one + and one-, the - will take over. Secondly, -2 times -6 is 12 because when two negatives multiply or divide the answer will always be opositive. Lastly, 1+12 is 13.
Answer:
the long one because of the friction and you can gain speed the second way
Step-by-step explanation:

There are 4 red billings/billions. (Not sure what the correct word is since you use two different words.)