4 represents four thousand people. the rest represents 921. So the 4 means four thousand.
Answer:

Step-by-step explanation:
GIVEN: A group of robins took
days to fly
miles.
TO FIND: On average about how many miles did the robins flight each day.
SOLUTION:
Total number of days taken by robins to fly the distance 
Total distance traveled by robins 
Now,
Average miles robins flights each day 


Hence robin flight average
miles each day.
Answer:
D(3;-2).
Step-by-step explanation:
1) 
2) according to the formulas above:

3) finally, D(3;-2).
A decimal number with a digit (or group of digits) that repeats forever. The part that repeats can also be shown by placing dots over the first and last digits of the repeating pattern, or by a line over the pattern. Also called a "Repeating Decimal".