Answer:
50 from home to school and 55 from school to home.
Step-by-step explanation:
55 is 5 more then 50.
remember that to put a number in scientific notation is necessary to have the first digit of the number different to 0, so

to calculate the order of magnitude, if the number is greater than 3.16, we assume it as a 10, so in this case as 7.654 > 3.16 we get that the order is

So the order is 10^-3
It might be 8 hope this helped good luck on ur assignment