If amanda rode 5 miles on monday, 7 times as many as monday on tuesday, and 9 times as many as tuesday on wednesday how many miles did she ride of wednesday?

315 miles.

If Amanda rode 5 miles on Monday, then 7 times 5 would equal 35, thus giving Tuesday's mileage.

If it then continued to say that Wednesday was 9 times as many as Tuesday, then that would mean to multiply Tuesday's miles by 9, thus getting the final answer of 315.

Hope this helps!

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