9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4 ,5,6,7, in order from least to greatest

it’s already in order: the negative numbers, which are the least, are in the left side, which means it’s less, and the positive numbers, which are larger, are in the right side, which means they are larger.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m