Pa help naman po please need ko na po

How to write 245,600,000,000 in scientific notation

Amotorcycle has a reserved fuel of 0.5 liter which can be used if its 3 liter fuel tank is about to be emptied . the motorcycle consumes at most 0.5 liter of fuel for every 20 km of travel.a) what mathematical statement represents the amount of fuel that would be left in the motorcycle's fuel tank after traveling a certain distance if it's tank is full at the start of travel? b)suppose the motorcycle's tank is full and it travels a distance of 55 km, about how much fuel would be left in it's tank? c)if the motorcycle travels a distance of 130km with it's tank full, would the amount of fuel in it's tank be enough to cover the given distance? pls explain your answer.​

What are the coordinates of the midpoint of a line segment whose endpoints are at (2,-8)& (10,4)